Application that crashed: kontact
Version of the application: 4.3.1
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.30-1-amd64 x86_64
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
I had Kmail open before clicking Mail button inside Kontact. Closed Kmail and after clicked the reffered Mail button.

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f68074ef0b6 in KMKernel::identityManager() () from /usr/lib/libkmailprivate.so.4
#6  0x00007f680731a053 in IdentityPage::load() () from /usr/lib/libkmailprivate.so.4
#7  0x00007f682880302d in KCModule::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkdeui.so.5
#8  0x00007f6807359155 in ?? () from /usr/lib/libkmailprivate.so.4
#9  0x00007f68073591c5 in IdentityPage::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libkmailprivate.so.4
#10 0x00007f6827dcdf68 in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#11 0x00007f68272863bd in QWidget::event(QEvent*) () from /usr/lib/libQtGui.so.4
#12 0x00007f682723680d in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#13 0x00007f682723e86a in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#14 0x00007f682875b43b in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#15 0x00007f6827dbe51c in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#16 0x00007f6827dbf164 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#17 0x00007f6827de6f73 in ?? () from /usr/lib/libQtCore.so.4
#18 0x00007f6820eef12a in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#19 0x00007f6820ef2988 in ?? () from /lib/libglib-2.0.so.0
#20 0x00007f6820ef2b3c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#21 0x00007f6827de6bff in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#22 0x00007f68272cd64f in ?? () from /usr/lib/libQtGui.so.4
#23 0x00007f6827dbcde2 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#24 0x00007f6827dbd1b4 in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#25 0x00007f6827dbf424 in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#26 0x0000000000404751 in _start ()

Reported using DrKonqi