Application: kontact (4.4 pre)
KDE Platform Version: 4.3.80 (KDE 4.3.80 (KDE 4.4 Beta1)) (Compiled from sources)
Qt Version: 4.6.0
Operating System: Linux 2.6.30-gentoo-r5 x86_64
Distribution (Platform): Gentoo Packages

-- Information about the crash:
kgpg crashes at login after update to 4.3.80. 

Possibly related: pykde-4.3.80 doesn't build for me, so I currently use pykde-4.3.4 with kdelibs-4.3.80. 

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[KCrash Handler]
#5  0x00007f673948b3c5 in QEventLoop::exec (this=0x2128690, flags={i = -382100432}) at ../../include/QtCore/../../src/corelib/tools/qstack.h:67
#6  0x00007f6739b20912 in KJob::exec (this=0x28b5e20) at /var/tmp/portage/kde-base/kdelibs-4.3.80/work/kdelibs-4.3.80/kdecore/jobs/kjob.cpp:202
#7  0x00007f6726cde14a in KMSearchRuleString::matchesInternal (this=<value optimized out>, msgContents=<value optimized out>)
    at /var/tmp/portage/kde-base/kmail-4.3.80/work/kmail-4.3.80/kmail/kmsearchpattern.cpp:475
#8  0x00007f6726cdf94f in KMSearchRuleString::matches (this=0x15987a0, msg=0x248c100) at /var/tmp/portage/kde-base/kmail-4.3.80/work/kmail-4.3.80/kmail/kmsearchpattern.cpp:404
#9  0x00007f6726cdc4fc in KMSearchPattern::matches (this=0x15ad1a0, msg=0x248c100, ignoreBody=false) at /var/tmp/portage/kde-base/kmail-4.3.80/work/kmail-4.3.80/kmail/kmsearchpattern.cpp:746
#10 0x00007f6726cc8127 in KMFilterMgr::isMatching (this=<value optimized out>, msg=0x248c100, filter=<value optimized out>)
    at /var/tmp/portage/kde-base/kmail-4.3.80/work/kmail-4.3.80/kmail/kmfiltermgr.cpp:279
#11 0x00007f6726cc8a7e in KMFilterMgr::process (this=0xf51210, msg=0x248c100, set=<value optimized out>, account=true, accountId=551501770)
    at /var/tmp/portage/kde-base/kmail-4.3.80/work/kmail-4.3.80/kmail/kmfiltermgr.cpp:245
#12 0x00007f6726c4e4cb in KMAccount::processNewMsg (this=0xd80c50, aMsg=0x248c100) at /var/tmp/portage/kde-base/kmail-4.3.80/work/kmail-4.3.80/kmail/kmaccount.cpp:264
#13 0x00007f6726d4f540 in KMail::PopAccount::slotProcessPendingMsgs (this=0xd80c50) at /var/tmp/portage/kde-base/kmail-4.3.80/work/kmail-4.3.80/kmail/popaccount.cpp:324
#14 0x00007f6726d4fc08 in KMail::PopAccount::qt_metacall (this=0xd80c50, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffe939a830)
    at /var/tmp/portage/kde-base/kmail-4.3.80/work/kmail-4.3.80_build/kmail/popaccount.moc:88
#15 0x00007f67394a11bf in QMetaObject::activate (sender=0xd80e10, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xf0000004f0000b0) at kernel/qobject.cpp:3286
#16 0x00007f673949d6d3 in QObject::event (this=0xd80e10, e=0x60c620) at kernel/qobject.cpp:1216
#17 0x00007f673845a776 in QApplicationPrivate::notify_helper (this=0x648600, receiver=0xd80e10, e=0x7fffe939afe0) at kernel/qapplication.cpp:4242
#18 0x00007f67384621f5 in QApplication::notify (this=0x7fffe939b320, receiver=0xd80e10, e=0x7fffe939afe0) at kernel/qapplication.cpp:4207
#19 0x00007f673a0be5c1 in KApplication::notify (this=0x7fffe939b320, receiver=0xd80e10, event=0x7fffe939afe0)
    at /var/tmp/portage/kde-base/kdelibs-4.3.80/work/kdelibs-4.3.80/kdeui/kernel/kapplication.cpp:302
#20 0x00007f673948c603 in QCoreApplication::notifyInternal (this=0x7fffe939b320, receiver=0xd80e10, event=0x7fffe939afe0) at kernel/qcoreapplication.cpp:704
#21 0x00007f67394bc9bc in QTimerInfoList::activateTimers (this=0x655760) at kernel/qcoreapplication.h:215
#22 0x00007f67394b8fe8 in idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#23 0x00007f67315c5fc1 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0x00007f67315c9558 in g_main_context_iterate () from /usr/lib/libglib-2.0.so.0
#25 0x00007f67315c970c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#26 0x00007f67394b8cbc in QEventDispatcherGlib::processEvents (this=0x638880, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#27 0x00007f67385005df in QGuiEventDispatcherGlib::processEvents (this=0x2, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#28 0x00007f673948afe2 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -382094768}) at kernel/qeventloop.cpp:149
#29 0x00007f673948b3b4 in QEventLoop::exec (this=0x7fffe939b290, flags={i = -382094688}) at kernel/qeventloop.cpp:201
#30 0x00007f673948d844 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#31 0x0000000000403f9a in main (argc=3, argv=0x7fffe939b838) at /var/tmp/portage/kde-base/kontact-4.3.80/work/kontact-4.3.80/kontact/src/main.cpp:221

Reported using DrKonqi