The same thing happened too me. The finder crashes and restarts every 1.5 minutes exactly. OS X 10.4.11. Ran Disk Utility, MacJanitor and all seems clean. DiskWarrior 3.0.3 was unable to help.
Console.log showed this:
Mac OS X Version 10.4.11 (Build 8S165)
2009-01-24 16:03:49 -0600
2009-01-24 16:03:54.469 loginwindow[76] FSResolveAliasWithMountFlags returned err = -43
2009-01-24 16:03:59.548 SystemUIServer[97] lang is:en
Kensington FastUserSwitch: Session On Console
Kensington FastUserSwitch: Session User ID = 501
Kensington FastUserSwitch: Installing User Switch Notifications
Workaround Bonjour: Unknown error: 0
This started the series of crashes, each with this notation:
Jan 24 16:04:19 tom-nelsons-power-mac-g5 crashdump[220]: Finder crashed
Jan 24 16:04:20 tom-nelsons-power-mac-g5 crashdump[220]: crash report written to: /Users/tomnelson/Library/Logs/CrashReporter/Finder.crash.log
Finder.crash.log shows:
0x9efce000 - 0x9f01bfff com.apple.CoreText 1.0.4 (???) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreText.framework/Versions/A/CoreText
0x9f046000 - 0x9f401fff com.apple.CoreGraphics 1.258.82 (???) /System/Library/Frameworks/ApplicationServices.framework/Versions/A/Frameworks/CoreGraphics.framework/Versions/A/CoreGraphics
0x9f48e000 - 0x9f4b7fff com.apple.Metadata 10.4.4 (121.36) /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadata.framework/Versions/A/Metadata
0x9f4c8000 - 0x9f79ffff com.apple.CoreServices.CarbonCore 681.18 /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonCore.framework/Versions/A/CarbonCore
0x9f805000 - 0x9f880fff com.apple.audio.CoreAudio 3.0.5 /System/Library/Frameworks/CoreAudio.framework/Versions/A/CoreAudio
0x9f8bd000 - 0x9faf0fff com.apple.Foundation 6.4.11 (567.40) /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x9fc14000 - 0x9fc19fff libmathCommon.A.dylib /usr/lib/system/libmathCommon.A.dylib
0x9fc1b000 - 0x9fc9ffff libobjc.A.dylib /usr/lib/libobjc.A.dylib
0x9fcc9000 - 0x9fda3fff com.apple.CoreFoundation 6.4.11 (368.35) /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x9fdec000 - 0x9ffa8fff libSystem.B.dylib /usr/lib/libSystem.B.dylib
I sure could use some help! Thanks.