Version:           3.4.0 (using KDE KDE 3.4.0)
Installed from:    Debian stable Packages
OS:                Other

I get the signal 11 SIGSEGV too often. not just in konqueror, also hapenned in kopete, kontact, kicker, kaffeine and more, most of them crash just when I close them (I always get this with kaffeine) and with konqueror, there is no need of it, it crashes on its own. this is the trace back (or back trace, my english sucks):

(no debugging symbols found)
Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
(no debugging symbols found)
`system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols.
(no debugging symbols found)
(no debugging symbols found)
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(no debugging symbols found)
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[Thread debugging using libthread_db enabled]
[New Thread -1230239296 (LWP 30427)]
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
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[KCrash handler]
#4  0xb6de25ed in pthread_mutex_lock ()
   from /lib/tls/i686/cmov/libpthread.so.0
#5  0xb6d5cc51 in _XUnregisterFilter () from /usr/X11R6/lib/libX11.so.6
#6  0xb6d4918d in XrmDestroyDatabase () from /usr/X11R6/lib/libX11.so.6
#7  0xb6d33eda in _XFreeDisplayStructure () from /usr/X11R6/lib/libX11.so.6
#8  0xb6d223bd in XCloseDisplay () from /usr/X11R6/lib/libX11.so.6
#9  0xb7107274 in qt_cleanup () from /usr/lib/libqt-mt.so.3
#10 0xb716e39b in QApplication::~QApplication () from /usr/lib/libqt-mt.so.3
#11 0xb777ff77 in KApplication::~KApplication () from /usr/lib/libkdecore.so.4
#12 0xb781e823 in KUniqueApplication::~KUniqueApplication ()
   from /usr/lib/libkdecore.so.4
#13 0x08094136 in KComboBox::itemSelected ()
#14 0x0806680d in ?? ()
#15 0xbffff950 in ?? ()
#16 0x00000000 in ?? ()
#17 0x00000000 in ?? ()
#18 0x00000000 in ?? ()
#19 0x00000000 in ?? ()
#20 0x00000001 in ?? ()
#21 0x080e7c9c in _IO_stdin_used ()
#22 0x00000000 in ?? ()
#23 0x080e7f60 in _IO_stdin_used ()
#24 0x080e7ec0 in _IO_stdin_used ()
#25 0xbffff978 in ?? ()
#26 0xb6cce2ee in operator new () from /usr/lib/libstdc++.so.5
#27 0xb6af78c8 in __libc_start_main () from /lib/tls/i686/cmov/libc.so.6
#28 0x08066571 in ?? ()


and needless to say, I don't know what the hell to do with this. that also happened once with umbrello. I'm using pc intel 686, Ubuntu Hoary. KDE 3.4.0.

any help will do. thanks.