Application that crashed: kontact
Version of the application: 4.3.2
KDE Version: 4.3.2 (KDE 4.3.2)
Qt Version: 4.5.3
Operating System: Linux 2.6.31-gentoo x86_64

What I was doing when the application crashed:
did nothing special inside kmail, just checked mail, that is, starting the app, switching to my IMAP folder, pressed F5 a few times as I was expecting a mail, and then (the mail didn't arrive) I just wanted to quit by <ALT+F Q> sequence.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x00007fdd45905740 in QListData::shared_null () from /usr/lib64/qt4/libQtCore.so.4
#6  0x00007fdd47c459b3 in void qDeleteAll<QHash<QString, KIO::SchedulerPrivate::ProtocolInfo*>::const_iterator>(QHash<QString, KIO::SchedulerPrivate::ProtocolInfo*>::const_iterator, QHash<QString, KIO::SchedulerPrivate::ProtocolInfo*>::const_iterator) () from /usr/lib64/libkio.so.5
#7  0x00007fdd47c420e2 in ._259::destroy() () from /usr/lib64/libkio.so.5
#8  0x00007fdd4480790d in exit () from /lib/libc.so.6
#9  0x00007fdd447efa44 in __libc_start_main () from /lib/libc.so.6
#10 0x00000000004033c9 in _start ()

This bug may be a duplicate of or related to bug 206392

Reported using DrKonqi