Application that crashed: kbuildsycoca4
Version of the application: 1.1
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-17-generic x86_64
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
When I start Kopete KBuildSycoca crashes. But Kopete run with any problem.

 -- Backtrace:
Application: KBuildSycoca (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[KCrash Handler]
#5  KSycocaEntry::offset (this=0x0) at ../../kdecore/sycoca/ksycocaentry.cpp:133
#6  0x00007f82d122c5dd in KBuildMimeTypeFactory::savePatternLists (this=0x1fcccf0, str=<value optimized out>) at ../../kded/kbuildmimetypefactory.cpp:361
#7  0x00007f82d122ca93 in KBuildMimeTypeFactory::save (this=0x1fcccf0, str=...) at ../../kded/kbuildmimetypefactory.cpp:307
#8  0x00007f82d1225da9 in KBuildSycoca::save (this=0x2479ea0, str=0x1f7b340) at ../../kded/kbuildsycoca.cpp:525
#9  0x00007f82d1228ab3 in KBuildSycoca::recreate (this=0x2479ea0) at ../../kded/kbuildsycoca.cpp:433
#10 0x00007f82d1229ee6 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../kded/kbuildsycoca.cpp:829
#11 0x0000000000406da8 in launch (argc=3, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=24, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x1eeffd8 "home;1263046460;59558;12842_TIME0") at ../../kinit/kinit.cpp:677
#12 0x0000000000407aa0 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#13 0x0000000000407f51 in handle_requests (waitForPid=12841) at ../../kinit/kinit.cpp:1362
#14 0x0000000000408ccd in main (argc=<value optimized out>, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1745

Reported using DrKonqi