As-tu toi aussi le message de K-Thys :
Si oui, tu peux essayer aussi : rm ~/Library/Saved\ Application\ State/com.apple.finder.savedState (= l'enregistrement de l'état des fenêtres du Finder)
Sinon, peux-tu accéder à la Console pour y lire les rapports de crash du Finder ?
C'était exactement le même problème.
Il a disparu.
Du coup, dans la console j'ai ce message :
23/01/12 18:48:20,901 ReportCrash: Removing excessive log: file://localhost/Users/iTeups/Library/Logs/DiagnosticReports/Finder_2012-01-22-182131_imac-de-nom-prénom-2.crash
---------- Nouveau message ajouté à 18h55 ---------- Le message précédent a été envoyé à 18h50 ----------
Process: Finder [437]
Path: /System/Library/CoreServices/Finder.app/Contents/MacOS/Finder
Identifier: com.apple.finder
Version: 10.7.1 (10.7.1)
Build Info: Finder_FE-751001009000000~3
Code Type: X86-64 (Native)
Parent Process: launchd [165]
Date/Time: 2012-01-23 18:51:14.391 +0100
OS Version: Mac OS X 10.7.2 (11C74)
Report Version: 9
Crashed Thread: 0 Dispatch queue: com.apple.main-thread
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
VM Regions Near 0:
-->
__TEXT 0000000101350000-0000000101854000 [ 5136K] r-x/rwx SM=COW /System/Library/CoreServices/Finder.app/Contents/MacOS/Finder
Application Specific Information:
objc[437]: garbage collection is OFF
Thread 0 Crashed:: Dispatch queue: com.apple.main-thread
0 com.apple.DesktopServices 0x000000010196f170 BTreeIterator::PushForward(Page*) + 30
1 com.apple.DesktopServices 0x000000010196f12b BTreeIterator::BuildStack(IAOrderedStorable const*) + 81
2 com.apple.DesktopServices 0x000000010196f0af BTreeIterator::BTreeIterator(BTree*) + 31
3 com.apple.DesktopServices 0x000000010196f070 BTree::MakeIterator() + 34
4 com.apple.DesktopServices 0x000000010196d146 TPropertyInfo::MakeProperties(TPropertyInfoList*, unsigned char*, unsigned int, bool) + 216
5 com.apple.DesktopServices 0x00000001019f8244 TPropertyInfo::CreatePropertyList(TCountedPtr<TFSInfo> const&, double&, long long&, bool, bool, TPropertyInfoList*) + 422
6 com.apple.DesktopServices 0x00000001019f804a TPropertyInfo::CreatePropertyList(TCountedPtr<TCFURLInfo> const&, double&, long long&, bool, bool, TPropertyInfoList*) + 154
7 com.apple.DesktopServices 0x000000010196cf7e THFSPlusPropertyStore::Open(bool, bool) const + 130
8 com.apple.DesktopServices 0x000000010196cede THFSPlusPropertyStore::GetProperties(bool) const + 38
9 com.apple.DesktopServices 0x000000010196c7d4 TNode::GetExtendedPropertyStore(bool) const + 208
10 com.apple.DesktopServices 0x000000010196c647 TNode::GetExtendedProperty(unsigned int, TPropertyReference&, bool) const + 39
11 com.apple.DesktopServices 0x000000010196b306 TNode::GetProperty(unsigned int, TPropertyReference&, unsigned int) const + 578
12 com.apple.DesktopServices 0x000000010196ae56 TNode::GetProperty(unsigned int, TPropertyReference&, OpaqueNodeRequest* const&, unsigned int) const + 68
13 com.apple.DesktopServices 0x000000010196adb7 GetNodeProperty(OpaqueNodeRef*, unsigned int, TPropertyReference&, OpaqueNodeRequest*, unsigned int) + 162
14 com.apple.DesktopServices 0x0000000101973d3c NodeGetPropertyAsData + 61
15 com.apple.finder 0x000000010138853c 0x101350000 + 230716
16 com.apple.finder 0x000000010145e09e 0x101350000 + 1106078
17 com.apple.finder 0x000000010145dd02 0x101350000 + 1105154
18 com.apple.finder 0x000000010145dbbc 0x101350000 + 1104828
19 com.apple.finder 0x000000010145db11 0x101350000 + 1104657
20 com.apple.finder 0x000000010145d9c8 0x101350000 + 1104328
21 com.apple.finder 0x000000010145d931 0x101350000 + 1104177
22 com.apple.finder 0x000000010145d869 0x101350000 + 1103977
23 com.apple.finder 0x0000000101467a30 0x101350000 + 1145392
24 com.apple.finder 0x0000000101467542 0x101350000 + 1144130
25 com.apple.AppKit 0x000000010413d0e0 -[NSWindow sendEvent:] + 6306
26 com.apple.AppKit 0x00000001040d568f -[NSApplication sendEvent:] + 5593
27 com.apple.finder 0x000000010150c614 0x101350000 + 1820180
28 com.apple.AppKit 0x000000010406b682 -[NSApplication run] + 555
29 com.apple.AppKit 0x00000001042ea80c NSApplicationMain + 867
30 com.apple.finder 0x000000010135599b 0x101350000 + 22939
31 com.apple.finder 0x0000000101355960 0x101350000 + 22880
Thread 1:: Dispatch queue: com.apple.libdispatch-manager
0 libsystem_kernel.dylib 0x000000010647f7e6 kevent + 10
1 libdispatch.dylib 0x00000001062695be _dispatch_mgr_invoke + 923
2 libdispatch.dylib 0x000000010626814e _dispatch_mgr_thread + 54
Thread 2:: com.apple.CFSocket.private
0 libsystem_kernel.dylib 0x000000010647edf2 __select + 10
1 com.apple.CoreFoundation 0x00000001038baf9b __CFSocketManager + 1355
2 libsystem_c.dylib 0x00000001063338bf _pthread_start + 335
3 libsystem_c.dylib 0x0000000106336b75 thread_start + 13
Thread 3:
0 libsystem_kernel.dylib 0x000000010647f192 __workq_kernreturn + 10
1 libsystem_c.dylib 0x0000000106335594 _pthread_wqthread + 758
2 libsystem_c.dylib 0x0000000106336b85 start_wqthread + 13
Thread 4:
0 libsystem_kernel.dylib 0x000000010647f192 __workq_kernreturn + 10
1 libsystem_c.dylib 0x0000000106335594 _pthread_wqthread + 758
2 libsystem_c.dylib 0x0000000106336b85 start_wqthread + 13
Thread 5:
0 libsystem_kernel.dylib 0x000000010647f192 __workq_kernreturn + 10
1 libsystem_c.dylib 0x0000000106335594 _pthread_wqthread + 758
2 libsystem_c.dylib 0x0000000106336b85 start_wqthread + 13
Thread 0 crashed with X86 Thread State (64-bit):
rax: 0x00007fbff3a917a0 rbx: 0x00007fbff3a91770 rcx: 0x0000000000000000 rdx: 0x0000000000000000
rdi: 0x0000000101951000 rsi: 0x0000000000000000 rbp: 0x00007fff60f4eed0 rsp: 0x00007fff60f4eeb0
r8: 0x000000000000001c r9: 0x0000000000000916 r10: 0x0000000000000000 r11: 0x00007fbff3a917a0
r12: 0x0000000000000000 r13: 0x0000000000006004 r14: 0x0000000101a71c30 r15: 0x00007fbff3a91520
rip: 0x000000010196f170 rfl: 0x0000000000010297 cr2: 0x0000000000000000
Logical CPU: 0
Binary Images:
0x101350000 - 0x101853fff com.apple.finder (10.7.1 - 10.7.1) <548C24A0-975C-3167-88AA-036CEFBE3F9D> /System/Library/CoreServices/Finder.app/Contents/MacOS/Finder
0x101954000 - 0x101a6cff7 com.apple.DesktopServices (1.6.1 - 1.6.1) <4418EAA6-7163-3A77-ABD3-F8289796C81A> /System/Library/PrivateFrameworks/DesktopServicesPriv.framework/Versions/A/DesktopServicesPriv
0x101acb000 - 0x101b16ff7 com.apple.SystemConfiguration (1.11.1 - 1.11) <F832FE21-5509-37C6-B1F1-48928F31BE45> /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfiguration
0x101b3f000 - 0x101e17ff7 com.apple.security (7.0 - 55010) <93713FF4-FE86-3B4C-8150-5FCC7F3320C8> /System/Library/Frameworks/Security.framework/Versions/A/Security
0x101f31000 - 0x101f6ffff com.apple.bom (11.0 - 183) <841FA160-A37A-368D-B14E-27AA9DD1AEDA> /System/Library/PrivateFrameworks/Bom.framework/Versions/A/Bom
0x101f80000 - 0x101f86fff com.apple.DiskArbitration (2.4.1 - 2.4.1) <CEA34337-63DE-302E-81AA-10D717E1F699> /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
0x101f96000 - 0x101fabfff com.apple.FileSync.framework (6.0 - 432) <D296CA43-BAED-3AA9-953A-C879FEBD6104> /System/Library/PrivateFrameworks/FileSync.framework/Versions/A/FileSync
0x101fc2000 - 0x10202cfff com.apple.framework.IOKit (2.0 - ???) <87D55F1D-CDB5-3D13-A5F9-98EA4E22F8EE> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x10205b000 - 0x1020bdfff com.apple.coreui (1.2.1 - 164.1) <F7972630-F696-3FC5-9FCF-A6E1C8771078> /System/Library/PrivateFrameworks/CoreUI.framework/Versions/A/CoreUI
0x1020fb000 - 0x10229afff com.apple.QuartzCore (1.7 - 270.0) <E8FC9AA4-A5CB-384B-AD29-7190A1387D3E> /System/Library/Frameworks/QuartzCore.framework/Versions/A/QuartzCore
0x102347000 - 0x102347fff com.apple.Cocoa (6.6 - ???) <021D4214-9C23-3CD8-AFB2-F331697A4508> /System/Library/Frameworks/Cocoa.framework/Versions/A/Cocoa
0x10234b000 - 0x10235aff7 com.apple.opengl (1.7.5 - 1.7.5) <2945F1A6-910C-3596-9988-5701B04BD821> /System/Library/Frameworks/OpenGL.framework/Versions/A/OpenGL
0x102363000 - 0x10244afff com.apple.backup.framework (1.3.1 - 1.3.1)

F01784C-3C09-3F08-B949-779F0A5248C1> /System/Library/PrivateFrameworks/Backup.framework/Versions/A/Backup
0x1024bf000 - 0x1024c0fff com.apple.ServerInformation (1.0 - 1) <EE6BFCB2-C727-3CE6-B8C9-834230B2646B> /System/Library/PrivateFrameworks/ServerInformation.framework/Versions/A/ServerInformation
0x1024c6000 - 0x102522fff com.apple.QuickLookFramework (3.1 - 500.1) <0C9E98D2-D8F9-3161-9809-0D77B98AD938> /System/Library/Frameworks/QuickLook.framework/Versions/A/QuickLook
0x10255b000 - 0x10256afff com.apple.Collaboration (63 - 63) <AA2E926B-68AE-3B61-A484-B9DAE64EE03E> /System/Library/Frameworks/Collaboration.framework/Versions/A/Collaboration
0x10257d000 - 0x10277ffff libicucore.A.dylib (46.1.0 - compatibility 1.0.0)

8CD6ED3-C8E4-3CCD-89AC-9C3198803101> /usr/lib/libicucore.A.dylib
0x102812000 - 0x102819fff com.apple.NetFS (4.0 - 4.0) <B9F41443-679A-31AD-B0EB-36557DAF782B> /System/Library/Frameworks/NetFS.framework/Versions/A/NetFS
0x102822000 - 0x102b46fff com.apple.HIToolbox (1.8 - ???) <A3BE7C59-52E6-3A7F-9B30-24B7DD3E95F2> /System/Library/Frameworks/Carbon.framework/Versions/A/Frameworks/HIToolbox.framework/Versions/A/HIToolbox
0x102c91000 - 0x102f0cfff com.apple.imageKit (2.1.1 - 1.0) <9C159577-0FFF-34D8-890E-66627A9E44FB> /System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/ImageKit.framework/Versions/A/ImageKit
0x103091000 - 0x10318ffff com.apple.QuickLookUIFramework (3.1 - 500.1) <D3A71FF1-7ED1-39DB-AD4E-451612DA536C> /System/Library/Frameworks/Quartz.framework/Versions/A/Frameworks/QuickLookUI.framework/Versions/A/QuickLookUI
0x10323e000 - 0x103295fff com.apple.Suggestions (1.0 - 85.0) <CC8986E7-65EF-3CE5-9058-B082EB19DFFA> /System/Library/PrivateFrameworks/Suggestions.framework/Versions/A/Suggestions
0x1032d5000 - 0x1032d8fff com.apple.AppleSystemInfo (1.0 - 1) <598ADC13-C994-3579-A885-0D6658DDD564> /System/Library/PrivateFrameworks/AppleSystemInfo.framework/Versions/A/AppleSystemInfo
0x1032e3000 - 0x10343cfff com.apple.audio.toolbox.AudioToolbox (1.7.1 - 1.7.1) <4877267E-F736-3019-85D3-40A32A042A80> /System/Library/Frameworks/AudioToolbox.framework/Versions/A/AudioToolbox
0x1034c0000 - 0x1035baff7 com.apple.DiskImagesFramework (10.7.2 - 331) <C88025FC-2460-3F33-B808-CB1E8C2E5CB9> /System/Library/PrivateFrameworks/DiskImages.framework/Versions/A/DiskImages
0x10361a000 - 0x10361bfff libDiagnosticMessagesClient.dylib (??? - ???)

DCF577B-F126-302B-BCE2-4DB9A95B8598> /usr/lib/libDiagnosticMessagesClient.dylib
0x103623000 - 0x103696fff libstdc++.6.dylib (52.0.0 - compatibility 7.0.0) <6BDD43E4-A4B1-379E-9ED5-8C713653DFF2> /usr/lib/libstdc++.6.dylib
0x1036f5000 - 0x103722fe7 libSystem.B.dylib (159.1.0 - compatibility 1.0.0) <095FDD3C-3961-3865-A59B-A5B0A4B8B923> /usr/lib/libSystem.B.dylib
0x103733000 - 0x103817def libobjc.A.dylib (228.0.0 - compatibility 1.0.0) <C5F2392D-B481-3A9D-91BE-3D039FFF4DEC> /usr/lib/libobjc.A.dylib
0x10382f000 - 0x10382ffff com.apple.CoreServices (53 - 53) <043C8026-8EDD-3241-B090-F589E24062EF> /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
0x103839000 - 0x103a0dfff com.apple.CoreFoundation (6.7.1 - 635.15) <FE4A86C2-3599-3CF8-AD1A-822F1FEA820F> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x103b60000 - 0x103b60fff com.apple.ApplicationServices (41 - 41) <03F3FA8F-8D2A-3AB6-A8E3-40B001116339> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/ApplicationServices
0x103b68000 - 0x103e81ff7 com.apple.Foundation (6.7.1 - 833.20) <D922F590-FDA6-3D89-A271-FD35E2290624> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x104066000 - 0x104c67ff7 com.apple.AppKit (6.7.2 - 1138.23) <5CD2C850-4F52-3BA2-BA11-3107DFD2D23C> /System/Library/Frameworks/AppKit.framework/Versions/C/AppKit
0x1053a7000 - 0x1053b9ff7 libbsm.0.dylib (??? - ???)

49BB16F-75FA-363F-8D98-7A9C3FA90A0D> /usr/lib/libbsm.0.dylib
0x1053c5000 - 0x105ad8587 com.apple.CoreGraphics (1.600.0 - ???) <A9F2451E-6F60-350E-A6E5-539669B53074> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics
0x105bdb000 - 0x105cb9fff com.apple.ImageIO.framework (3.1.1 - 3.1.1) <13E549F8-5BD6-3BAE-8C33-1D0BD269C081> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ImageIO.framework/Versions/A/ImageIO
0x105d03000 - 0x105db6fff com.apple.CoreText (220.11.0 - ???) <4EA8E2DF-542D-38D5-ADB9-C0DAA73F898B> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreText.framework/Versions/A/CoreText
0x105e10000 - 0x105e94ff7 com.apple.ApplicationServices.ATS (317.5.0 - ???) <FE629F2D-6BC0-3A58-9844-D8B9A6808A00> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ATS.framework/Versions/A/ATS
0x105ec0000 - 0x105f87ff7 com.apple.ColorSync (4.7.0 - 4.7.0) <F325A9D7-7203-36B7-8C1C-B6A4D5CC73A8> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/ColorSync.framework/Versions/A/ColorSync
0x105fcc000 - 0x106027ff7 com.apple.HIServices (1.10 - ???) <BAB8B422-7047-3D2D-8E0A-13FCF153E4E7> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/HIServices.framework/Versions/A/HIServices
0x106059000 - 0x10606dff7 com.apple.LangAnalysis (1.7.0 - 1.7.0) <04C31EF0-912A-3004-A08F-CEC27030E0B2> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/LangAnalysis.framework/Versions/A/LangAnalysis
0x106080000 - 0x1060fbff7 com.apple.print.framework.PrintCore (7.1 - 366.1)

F140DEB-9F87-3672-97CC-F983752581AC> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/PrintCore.framework/Versions/A/PrintCore
0x106134000 - 0x106175fff com.apple.QD (3.12 - ???) <4F3C5629-97C7-3E55-AF3C-ACC524929DA2> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/QD.framework/Versions/A/QD
0x106191000 - 0x1061a6fff com.apple.speech.synthesis.framework (4.0.74 - 4.0.74) <C061ECBB-7061-3A43-8A18-90633F943295> /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/SpeechSynthesis.framework/Versions/A/SpeechSynthesis
0x1061ba000 - 0x1061ccff7 libz.1.dylib (1.2.5 - compatibility 1.0.0)

0CBEF15-4978-3DED-8629-7109880A19D4> /usr/lib/libz.1.dylib
0x1061d1000 - 0x1061d7fff IOSurface (??? - ???) <06FA3FDD-E6D5-391F-B60D-E98B169DAB1B> /System/Library/Frameworks/IOSurface.framework/Versions/A/IOSurface
0x1061e3000 - 0x1061e8fff libcache.dylib (47.0.0 - compatibility 1.0.0) <B7757E2E-5A7D-362E-AB71-785FE79E1527> /usr/lib/system/libcache.dylib
0x1061f4000 - 0x106236ff7 libcommonCrypto.dylib (55010.0.0 - compatibility 1.0.0) <A5B9778E-11C3-3F61-B740-1F2114E967FB> /usr/lib/system/libcommonCrypto.dylib
0x10624a000 - 0x10624ffff libcompiler_rt.dylib (6.0.0 - compatibility 1.0.0) <98ECD5F6-E85C-32A5-98CD-8911230CB66A> /usr/lib/system/libcompiler_rt.dylib
0x106259000 - 0x106260fff libcopyfile.dylib (85.1.0 - compatibility 1.0.0) <172B1985-F24A-34E9-8D8B-A2403C9A0399> /usr/lib/system/libcopyfile.dylib
0x106266000 - 0x106274fff libdispatch.dylib (187.7.0 - compatibility 1.0.0) <712AAEAC-AD90-37F7-B71F-293FF8AE8723> /usr/lib/system/libdispatch.dylib
0x106287000 - 0x106288fff libdnsinfo.dylib (395.6.0 - compatibility 1.0.0) <718A135F-6349-354A-85D5-430B128EFD57> /usr/lib/system/libdnsinfo.dylib
0x10628d000 - 0x106291fff libdyld.dylib (195.5.0 - compatibility 1.0.0) <F1903B7A-D3FF-3390-909A-B24E09BAD1A5> /usr/lib/system/libdyld.dylib
0x106297000 - 0x106297fff libkeymgr.dylib (23.0.0 - compatibility 1.0.0) <61EFED6A-A407-301E-B454-CD18314F0075> /usr/lib/system/libkeymgr.dylib
0x10629b000 - 0x1062a5ff7 liblaunch.dylib (392.18.0 - compatibility 1.0.0)

9EF04F2-7F0C-3435-B785-BF283727FFBD> /usr/lib/system/liblaunch.dylib
0x1062b2000 - 0x1062b8fff libmacho.dylib (800.0.0 - compatibility 1.0.0) <D86F63EC-D2BD-32E0-8955-08B5EAFAD2CC> /usr/lib/system/libmacho.dylib
0x1062c1000 - 0x1062c5fff libmathCommon.A.dylib (2026.0.0 - compatibility 1.0.0) <FF83AFF7-42B2-306E-90AF-D539C51A4542> /usr/lib/system/libmathCommon.A.dylib