here is the most recent mds_localhost.crash log:
Process: mds [11246]
Path: /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadat a.framework/Versions/A/Support/mds
Identifier: mds
Version: ??? (???)
Code Type: X86-64 (Native)
Parent Process: launchd [1]
Date/Time: 2011-06-02 07:06:08.738 +1000
OS Version: Mac OS X 10.6.7 (10J869)
Report Version: 6
Exception Type: EXC_BAD_ACCESS (SIGSEGV)
Exception Codes: KERN_INVALID_ADDRESS at 0x0000000000000000
Crashed Thread: 3 Dispatch queue: Main compaction scheduler
Application Specific Information:
/SourceCache/Spotlight/Spotlight-507.15/index/ContentIndex/CIMerging.c:256: failed assertion '!buffers->badIndex' /.Spotlight-V100/Store-V1/Stores/72A07C09-DA16-4133-9E28-7ADA5FB65057 (hfs, t: 0x11, st: 0x0, f: 0x400d000) corrupt ro index need to rebuild 1.
Thread 0: Dispatch queue: com.apple.main-thread
0 libSystem.B.dylib 0x00007fff8519729a mach_msg_trap + 10
1 libSystem.B.dylib 0x00007fff8519790d mach_msg + 59
2 com.apple.CoreFoundation 0x00007fff8026f932 __CFRunLoopRun + 1698
3 com.apple.CoreFoundation 0x00007fff8026edbf CFRunLoopRunSpecific + 575
4 mds 0x000000010000c7e3 0x100000000 + 51171
5 mds 0x0000000100004aa0 0x100000000 + 19104
Thread 1: Dispatch queue: com.apple.libdispatch-manager
0 libSystem.B.dylib 0x00007fff851b012a kevent + 10
1 libSystem.B.dylib 0x00007fff851b1ffd _dispatch_mgr_invoke + 154
2 libSystem.B.dylib 0x00007fff851b1cd4 _dispatch_queue_invoke + 185
3 libSystem.B.dylib 0x00007fff851b17fe _dispatch_worker_thread2 + 252
4 libSystem.B.dylib 0x00007fff851b1128 _pthread_wqthread + 353
5 libSystem.B.dylib 0x00007fff851b0fc5 start_wqthread + 13
Thread 2:
0 libSystem.B.dylib 0x00007fff851b0f4a __workq_kernreturn + 10
1 libSystem.B.dylib 0x00007fff851b135c _pthread_wqthread + 917
2 libSystem.B.dylib 0x00007fff851b0fc5 start_wqthread + 13
Thread 3 Crashed: Dispatch queue: Main compaction scheduler
0 com.apple.spotlight.index 0x00000001001e23bb _dead_beef + 4
1 com.apple.spotlight.index 0x00000001001dc528 getItem + 420
2 com.apple.spotlight.index 0x00000001001de046 mergeIndexData + 2807
3 com.apple.spotlight.index 0x000000010015c3b5 _ContentIndexMergeIndexes + 290
4 com.apple.spotlight.index 0x000000010015c681 ContentIndexMergeIndexes + 472
5 com.apple.spotlight.index 0x0000000100138be4 OuterMerge + 1288
6 com.apple.spotlight.index 0x000000010013a6b0 si_mergeIndex + 3237
7 com.apple.spotlight.index 0x00000001001339c0 runLoop + 54
8 com.apple.spotlight.index 0x0000000100142d61 work_fun + 623
9 libSystem.B.dylib 0x00007fff851b1df2 _dispatch_queue_drain + 251
10 libSystem.B.dylib 0x00007fff851b1c54 _dispatch_queue_invoke + 57
11 libSystem.B.dylib 0x00007fff851b17fe _dispatch_worker_thread2 + 252
12 libSystem.B.dylib 0x00007fff851b1128 _pthread_wqthread + 353
13 libSystem.B.dylib 0x00007fff851b0fc5 start_wqthread + 13
Thread 4:
0 libSystem.B.dylib 0x00007fff851b0f4a __workq_kernreturn + 10
1 libSystem.B.dylib 0x00007fff851b135c _pthread_wqthread + 917
2 libSystem.B.dylib 0x00007fff851b0fc5 start_wqthread + 13
Thread 5:
0 libSystem.B.dylib 0x00007fff851d1f8a __semwait_signal + 10
1 libSystem.B.dylib 0x00007fff851d5da1 _pthread_cond_wait + 1286
2 com.apple.spotlight.index 0x00000001001dc102 callback + 160
3 com.apple.spotlight.index 0x00000001001603e1 dumpFlatData + 1281
4 com.apple.spotlight.index 0x0000000100149871 dumpTrieFatData + 257
5 com.apple.spotlight.index 0x000000010014a399 _dumpTrie + 649
6 com.apple.spotlight.index 0x000000010014a606 dumpTrie + 54
7 com.apple.spotlight.index 0x00000001001db3d1 mergeIndexDataTrampoline + 442
8 libSystem.B.dylib 0x00007fff851d04f6 _pthread_start + 331
9 libSystem.B.dylib 0x00007fff851d03a9 thread_start + 13
Thread 6:
0 libSystem.B.dylib 0x00007fff851d1f8a __semwait_signal + 10
1 libSystem.B.dylib 0x00007fff851d5da1 _pthread_cond_wait + 1286
2 com.apple.spotlight.index 0x00000001001dc102 callback + 160
3 com.apple.spotlight.index 0x00000001001603e1 dumpFlatData + 1281
4 com.apple.spotlight.index 0x0000000100149871 dumpTrieFatData + 257
5 com.apple.spotlight.index 0x000000010014991f dumpTrieFatData + 431
6 com.apple.spotlight.index 0x000000010014a399 _dumpTrie + 649
7 com.apple.spotlight.index 0x000000010014a606 dumpTrie + 54
8 com.apple.spotlight.index 0x00000001001db3d1 mergeIndexDataTrampoline + 442
9 libSystem.B.dylib 0x00007fff851d04f6 _pthread_start + 331
10 libSystem.B.dylib 0x00007fff851d03a9 thread_start + 13
Thread 7:
0 libSystem.B.dylib 0x00007fff851d1f8a __semwait_signal + 10
1 libSystem.B.dylib 0x00007fff851d5da1 _pthread_cond_wait + 1286
2 com.apple.spotlight.index 0x00000001001dc102 callback + 160
3 com.apple.spotlight.index 0x00000001001603e1 dumpFlatData + 1281
4 com.apple.spotlight.index 0x0000000100149dbf dumpTrieData + 527
5 com.apple.spotlight.index 0x000000010014995b dumpTrieFatData + 491
6 com.apple.spotlight.index 0x000000010014991f dumpTrieFatData + 431
7 com.apple.spotlight.index 0x000000010014a399 _dumpTrie + 649
8 com.apple.spotlight.index 0x000000010014a606 dumpTrie + 54
9 com.apple.spotlight.index 0x00000001001db3d1 mergeIndexDataTrampoline + 442
10 libSystem.B.dylib 0x00007fff851d04f6 _pthread_start + 331
11 libSystem.B.dylib 0x00007fff851d03a9 thread_start + 13
Thread 8:
0 libSystem.B.dylib 0x00007fff851d1f8a __semwait_signal + 10
1 libSystem.B.dylib 0x00007fff851d5da1 _pthread_cond_wait + 1286
2 com.apple.spotlight.index 0x00000001001dc102 callback + 160
3 com.apple.spotlight.index 0x00000001001603e1 dumpFlatData + 1281
4 com.apple.spotlight.index 0x0000000100149dbf dumpTrieData + 527
5 com.apple.spotlight.index 0x000000010014995b dumpTrieFatData + 491
6 com.apple.spotlight.index 0x000000010014991f dumpTrieFatData + 431
7 com.apple.spotlight.index 0x000000010014a399 _dumpTrie + 649
8 com.apple.spotlight.index 0x000000010014a606 dumpTrie + 54
9 com.apple.spotlight.index 0x00000001001db3d1 mergeIndexDataTrampoline + 442
10 libSystem.B.dylib 0x00007fff851d04f6 _pthread_start + 331
11 libSystem.B.dylib 0x00007fff851d03a9 thread_start + 13
Thread 3 crashed with X86 Thread State (64-bit):
rax: 0x0000000000000000 rbx: 0x0000000101826a20 rcx: 0x00007fff709d2630 rdx: 0x00007fff709d25c0
rdi: 0x0000000100276400 rsi: 0x0000000101800000 rbp: 0x000000013c3a7000 rsp: 0x000000013c3a7000
r8: 0x0000000000000001 r9: 0x000000010182cb90 r10: 0x000000010182f3d0 r11: 0x000000000000000b
r12: 0x0000000140a1b000 r13: 0x0000000100893a5a r14: 0x000000013c3a7640 r15: 0x000000014131b018
rip: 0x00000001001e23bb rfl: 0x0000000000010246 cr2: 0x0000000000000000
Binary Images:
0x100000000 - 0x1000cefef mds ??? (???) <DF032861-771E-0058-96F3-975E81A426E0> /System/Library/Frameworks/CoreServices.framework/Frameworks/Metadata.framework /Support/mds
0x100104000 - 0x100229ff7 com.apple.spotlight.index 10.6.3 (507.15) <5C193018-78E8-2C30-0AEB-D50424AFB8F3> /System/Library/PrivateFrameworks/SpotlightIndex.framework/Versions/A/Spotlight Index
0x10026a000 - 0x10026cfff com.apple.MDSChannel 1.0.1 (1.0.1) <63195212-0EBF-2FE2-AEFC-739040DFAB30> /System/Library/PrivateFrameworks/MDSChannel.framework/Versions/A/MDSChannel
0x7fff5fc00000 - 0x7fff5fc3bdef dyld 132.1 (???) <69130DA3-7CB3-54C8-ABC5-423DECDD2AF7> /usr/lib/dyld
0x7fff8004b000 - 0x7fff80058ff7 com.apple.AppleFSCompression 24.4 (1.0) <DDA39C71-6379-2844-B217-2995B61EA768> /System/Library/PrivateFrameworks/AppleFSCompression.framework/Versions/A/Apple FSCompression
0x7fff8019d000 - 0x7fff801abff7 libkxld.dylib ??? (???) <F90EDFE8-708A-3046-E403-A3B536FCFA43> /usr/lib/system/libkxld.dylib
0x7fff80223000 - 0x7fff8039afe7 com.apple.CoreFoundation 6.6.4 (550.42) <770C572A-CF70-168F-F43C-242B9114FCB5> /System/Library/Frameworks/CoreFoundation.framework/Versions/A/CoreFoundation
0x7fff808d3000 - 0x7fff80914fff com.apple.SystemConfiguration 1.10.5 (1.10.2) <FB39F09C-57BB-D8CC-348D-93E00C602F7D> /System/Library/Frameworks/SystemConfiguration.framework/Versions/A/SystemConfi guration
0x7fff809e2000 - 0x7fff80a5ffef libstdc++.6.dylib 7.9.0 (compatibility 7.0.0) <35ECA411-2C08-FD7D-11B1-1B7A04921A5C> /usr/lib/libstdc++.6.dylib
0x7fff80dfb000 - 0x7fff80e0afff com.apple.NetFS 3.2.2 (3.2.2) <7CCBD70E-BF31-A7A7-DB98-230687773145> /System/Library/Frameworks/NetFS.framework/Versions/A/NetFS
0x7fff80f1f000 - 0x7fff810ddfff libicucore.A.dylib 40.0.0 (compatibility 1.0.0) <2C6ECACF-CD56-1714-6F63-CB6F5EE7A1E2> /usr/lib/libicucore.A.dylib
0x7fff810e1000 - 0x7fff81197fff libobjc.A.dylib 227.0.0 (compatibility 1.0.0) <99CB3A0F-64CF-1D16-70CD-8AED2EF06C30> /usr/lib/libobjc.A.dylib
0x7fff8119c000 - 0x7fff811fcfe7 com.apple.framework.IOKit 2.0 (???) <D107CB8A-5182-3AC4-35D0-07068A695C05> /System/Library/Frameworks/IOKit.framework/Versions/A/IOKit
0x7fff813f2000 - 0x7fff813f2ff7 com.apple.CoreServices 44 (44) <DC7400FB-851E-7B8A-5BF6-6F50094302FB> /System/Library/Frameworks/CoreServices.framework/Versions/A/CoreServices
0x7fff8250f000 - 0x7fff82515ff7 com.apple.DiskArbitration 2.3 (2.3) <857F6E43-1EF4-7D53-351B-10DE0A8F992A> /System/Library/Frameworks/DiskArbitration.framework/Versions/A/DiskArbitration
0x7fff82da1000 - 0x7fff82db7fef libbsm.0.dylib ??? (???) <42D3023A-A1F7-4121-6417-FCC6B51B3E90> /usr/lib/libbsm.0.dylib
0x7fff82f56000 - 0x7fff8306dfef libxml2.2.dylib 10.3.0 (compatibility 10.0.0) <1B27AFDD-DF87-2009-170E-C129E1572E8B> /usr/lib/libxml2.2.dylib
0x7fff83121000 - 0x7fff83122fff liblangid.dylib ??? (???) <EA4D1607-2BD5-2EE2-2A3B-632EEE5A444D> /usr/lib/liblangid.dylib
0x7fff837df000 - 0x7fff837ffff7 com.apple.DirectoryService.Framework 3.6 (621.11) <AD76C757-6701-BDB5-631E-1CB77D669586> /System/Library/Frameworks/DirectoryService.framework/Versions/A/DirectoryServi ce
0x7fff83e3a000 - 0x7fff83ef7fff com.apple.CoreServices.OSServices 359 (359) <8F509D8D-4C94-9A1C-3A87-5B775D9F6075> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/OSServi ces.framework/Versions/A/OSServices
0x7fff83f74000 - 0x7fff841f7fe7 com.apple.Foundation 6.6.6 (751.53) <476E617B-B59B-53DE-991D-98C1993BCBCE> /System/Library/Frameworks/Foundation.framework/Versions/C/Foundation
0x7fff841fe000 - 0x7fff84238fff com.apple.bom 10.0 (164) <E5C9AFBD-68C1-197E-72B0-B43295DC87DC> /System/Library/PrivateFrameworks/Bom.framework/Versions/A/Bom
0x7fff84239000 - 0x7fff8430bfe7 com.apple.CFNetwork 454.11.12 (454.11.12) <B1C9008A-4A5D-609D-5D10-C93DAD6FFB4C> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CFNetwo rk.framework/Versions/A/CFNetwork
0x7fff8430c000 - 0x7fff84640fff com.apple.CoreServices.CarbonCore 861.34 (861.34) <B5680539-CB31-6C6D-C0AD-606D4D46E7F5> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/CarbonC ore.framework/Versions/A/CarbonCore
0x7fff84e01000 - 0x7fff84ebafff libsqlite3.dylib 9.6.0 (compatibility 9.0.0) <2C5ED312-E646-9ADE-73A9-6199A2A43150> /usr/lib/libsqlite3.dylib
0x7fff850a4000 - 0x7fff850eeff7 com.apple.Metadata 10.6.3 (507.15) <DE238BE4-5E22-C4D5-CF5C-3D50FDEE4701> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Metadat a.framework/Versions/A/Metadata
0x7fff85196000 - 0x7fff85357fff libSystem.B.dylib 125.2.10 (compatibility 1.0.0) <9BAEB2F2-B485-6349-E1AB-637FE12EE770> /usr/lib/libSystem.B.dylib
0x7fff863a3000 - 0x7fff863defff com.apple.AE 496.4 (496.4) <55AAD5CA-7160-7899-1C68-562ED8160DF7> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/AE.fram ework/Versions/A/AE
0x7fff86c40000 - 0x7fff86ce0fff com.apple.LaunchServices 362.2 (362.2) <87E172DB-2C0E-E2E5-2A75-FB4284AECDAF> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/LaunchS ervices.framework/Versions/A/LaunchServices
0x7fff871b1000 - 0x7fff871bdfff libbz2.1.0.dylib 1.0.5 (compatibility 1.0.0) <6FB0A8F4-72A1-D28F-E801-DE2C7498AFB9> /usr/lib/libbz2.1.0.dylib
0x7fff872c2000 - 0x7fff872d3fff com.apple.DSObjCWrappers.Framework 10.6 (134) <3C08225D-517E-2822-6152-F6EB13A4ADF9> /System/Library/PrivateFrameworks/DSObjCWrappers.framework/Versions/A/DSObjCWra ppers
0x7fff8749a000 - 0x7fff8752afff com.apple.SearchKit 1.3.0 (1.3.0) <4175DC31-1506-228A-08FD-C704AC9DF642> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/SearchK it.framework/Versions/A/SearchKit
0x7fff87576000 - 0x7fff875c2fff libauto.dylib ??? (???) <F7221B46-DC4F-3153-CE61-7F52C8C293CF> /usr/lib/libauto.dylib
0x7fff875ca000 - 0x7fff875dbff7 libz.1.dylib 1.2.3 (compatibility 1.0.0) <97019C74-161A-3488-41EC-A6CA8738418C> /usr/lib/libz.1.dylib
0x7fff87b37000 - 0x7fff87dbffef com.apple.security 6.1.2 (55002) <015C9A08-3D07-9462-8E91-DB1924349621> /System/Library/Frameworks/Security.framework/Versions/A/Security
0x7fff87e0b000 - 0x7fff87e36ff7 libxslt.1.dylib 3.24.0 (compatibility 3.0.0) <87A0B228-B24A-C426-C3FB-B40D7258DD49> /usr/lib/libxslt.1.dylib
0x7fff8881b000 - 0x7fff8881fff7 libmathCommon.A.dylib 315.0.0 (compatibility 1.0.0) <95718673-FEEE-B6ED-B127-BCDBDB60D4E5> /usr/lib/system/libmathCommon.A.dylib
0x7fff88820000 - 0x7fff88848fff com.apple.DictionaryServices 1.1.2 (1.1.2) <E9269069-93FA-2B71-F9BA-FDDD23C4A65E> /System/Library/Frameworks/CoreServices.framework/Versions/A/Frameworks/Diction aryServices.framework/Versions/A/DictionaryServices
0x7fffffe00000 - 0x7fffffe01fff libSystem.B.dylib ??? (???) <9BAEB2F2-B485-6349-E1AB-637FE12EE770> /usr/lib/libSystem.B.dylib