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 i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
I think the problem started after I tried to associate a mime type to an application. 
My installation is kubuntu 9.10 with all the updates (security, recommended and pre-released, not unsopported).

 -- Backtrace:
Application: KBuildSycoca (kbuildsycoca4), signal: Segmentation fault
[KCrash Handler]
#6  KSycocaEntry::offset (this=0x850d1e8) at ../../kdecore/sycoca/ksycocaentry.cpp:133
#7  0x00ced76f in KBuildMimeTypeFactory::save (this=0x850d1e8, str=...) at ../../kded/kbuildmimetypefactory.cpp:307
#8  0x00ce645c in KBuildSycoca::save (this=0x88f27e8, str=<value optimized out>) at ../../kded/kbuildsycoca.cpp:525
#9  0x00ce924d in KBuildSycoca::recreate (this=0x88f27e8) at ../../kded/kbuildsycoca.cpp:433
#10 0x00cea90f in kdemain (argc=1, argv=0xbfda4b44) at ../../kded/kbuildsycoca.cpp:829
#11 0x080485cb in main (argc=1, argv=0xbfda4b44) at kbuildsycoca4_dummy.cpp:3

This bug may be a duplicate of or related to bug 202871

Reported using DrKonqi