Application that crashed: kmail
Version of the application: 1.12.4
KDE Version: 4.3.4 (KDE 4.3.4)
Qt Version: 4.5.3
Operating System: Linux 2.6.32-trunk-amd64 x86_64
Distribution: Debian GNU/Linux unstable (sid)

What I was doing when the application crashed:
I have a GMail account, and I've tried to search in it but it was giving me all the time errors.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#5  0x00007faa71b77a00 in QListData::shared_null () from /usr/lib/libQtCore.so.4
#6  0x00007faa6acf4e2b in qDeleteAll<QList<KIO::Slave*>::const_iterator> (begin=<value optimized out>, end=...) at /usr/include/qt4/QtCore/qalgorithms.h:350
#7  qDeleteAll<SlaveList> (begin=<value optimized out>, end=...) at /usr/include/qt4/QtCore/qalgorithms.h:358
#8  ~ProtocolInfo (begin=<value optimized out>, end=...) at ../../kio/kio/scheduler.cpp:171
#9  qDeleteAll<QHash<QString, KIO::SchedulerPrivate::ProtocolInfo*>::const_iterator> (begin=<value optimized out>, end=...) at /usr/include/qt4/QtCore/qalgorithms.h:350
#10 0x00007faa6acf1493 in qDeleteAll<KIO::SchedulerPrivate::ProtocolInfoDict> () at /usr/include/qt4/QtCore/qalgorithms.h:358
#11 ~SchedulerPrivate () at ../../kio/kio/scheduler.cpp:103
#12 destroy () at ../../kio/kio/scheduler.cpp:209
#13 0x00007faa702e0422 in __run_exit_handlers (status=0, listp=0x7faa705f84c8, run_list_atexit=true) at exit.c:78
#14 0x00007faa702e0475 in *__GI_exit (status=41114416) at exit.c:100
#15 0x00007faa702c8ac4 in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, 
    rtld_fini=<value optimized out>, stack_end=0x7fff245c3578) at libc-start.c:254
#16 0x0000000000402389 in _start ()

This bug may be a duplicate of or related to bug 216840

Reported using DrKonqi