Application: kontact (4.4.2)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-22-generic i686
Distribution: Linux Mint 9 Isadora

-- Information about the crash:
While trying to switch from Thunderbird 3 to Kontact I experienced this sort of crash 2 times. Hope this helps to sort out the problem. 
regards,
Richard.

 -- Backtrace:
Application: Kontact (kontact), signal: Aborted
[KCrash Handler]
#6  0x00439422 in __kernel_vsyscall ()
#7  0x00ce9651 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0x00ceca82 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0x00be552f in __gnu_cxx::__verbose_terminate_handler() () from /usr/lib/libstdc++.so.6
#10 0x00be3465 in ?? () from /usr/lib/libstdc++.so.6
#11 0x00be34a2 in std::terminate() () from /usr/lib/libstdc++.so.6
#12 0x00be35e1 in __cxa_throw () from /usr/lib/libstdc++.so.6
#13 0x00be3c5f in operator new(unsigned int) () from /usr/lib/libstdc++.so.6
#14 0x00be3d3d in operator new[](unsigned int) () from /usr/lib/libstdc++.so.6
#15 0x0850a62c in mem_alloc (aSize=0xbfac9b7c) at ../../mimelib/dwstring.cpp:160
#16 0x0850ccb9 in DwString::_replace (this=0xbfac9c00, aPos1=0, aLen1=0, 
    aBuf=0x59fa0018 "From - Thu Apr 23 15:51:59 2009\r\nX-Mozilla-Status: 0001\r\nX-Mozilla-Status2: 00800000\r\nX-Mozilla-Keys:", ' ' <repeats 81 times>, "\nMessage-ID: <49F0"..., aLen2=673202057)
    at ../../mimelib/dwstring.cpp:1273
#17 0x0850d80f in DwString (this=0xbfac9c00, 
    aBuf=0x59fa0018 "From - Thu Apr 23 15:51:59 2009\r\nX-Mozilla-Status: 0001\r\nX-Mozilla-Status2: 00800000\r\nX-Mozilla-Keys:", ' ' <repeats 81 times>, "\nMessage-ID: <49F0"..., aLen=673202057)
    at ../../mimelib/dwstring.cpp:368
#18 0xb46a22ac in KMMessage::fromString (this=0x1bee24c0, ba=..., setStatus=false) at ../../kmail/kmmessage.cpp:409
#19 0xb48b71c1 in KMKernel::dbusAddMessage (this=0x8f2ea88, foldername=..., messageFile=..., MsgStatusFlags=...) at ../../kmail/kmkernel.cpp:796
#20 0xb4afc286 in KmailAdaptor::dbusAddMessage (this=0x8eb9630, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbfac9edc) at kmailadaptor.cpp:75
#21 KmailAdaptor::qt_metacall (this=0x8eb9630, _c=QMetaObject::InvokeMetaMethod, _id=7, _a=0xbfac9edc) at kmailadaptor.moc:243
#22 0x0046fb34 in QDBusConnectionPrivate::deliverCall (this=0x8b2e2d0, object=0x8eb9630, msg=..., metaTypes=..., slotIdx=11) at qdbusintegrator.cpp:904
#23 0x00470e45 in QDBusConnectionPrivate::activateCall (this=0x8b2e2d0, object=0x8eb9630, flags=273, msg=...) at qdbusintegrator.cpp:816
#24 0x00471880 in QDBusConnectionPrivate::activateObject (this=0x8b2e2d0, node=..., msg=..., pathStartPos=6) at qdbusintegrator.cpp:1364
#25 0x00471b1a in QDBusActivateObjectEvent::placeMetaCall (this=0x1bee2890) at qdbusintegrator.cpp:1477
#26 0x0115f3fe in QObject::event (this=0x8f2ea88, e=0x1bee2890) at kernel/qobject.cpp:1248
#27 0x06f124dc in QApplicationPrivate::notify_helper (this=0x8b35c78, receiver=0x8f2ea88, e=0x1bee2890) at kernel/qapplication.cpp:4300
#28 0x06f1905e in QApplication::notify (this=0xbfaca8f4, receiver=0x8f2ea88, e=0x1bee2890) at kernel/qapplication.cpp:3704
#29 0x0094ef2a in KApplication::notify (this=0xbfaca8f4, receiver=0x8f2ea88, event=0x1bee2890) at ../../kdeui/kernel/kapplication.cpp:302
#30 0x0114ea3b in QCoreApplication::notifyInternal (this=0xbfaca8f4, receiver=0x8f2ea88, event=0x1bee2890) at kernel/qcoreapplication.cpp:704
#31 0x01151473 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x8b16a60) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#32 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8b16a60) at kernel/qcoreapplication.cpp:1345
#33 0x011515dd in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#34 0x0117aadf in QCoreApplication::sendPostedEvents (s=0x8b38dc0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#35 postEventSourceDispatch (s=0x8b38dc0) at kernel/qeventdispatcher_glib.cpp:276
#36 0x018485e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#37 0x0184c2d8 in ?? () from /lib/libglib-2.0.so.0
#38 0x0184c4b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#39 0x0117a5d5 in QEventDispatcherGlib::processEvents (this=0x8b16588, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#40 0x06fd2135 in QGuiEventDispatcherGlib::processEvents (this=0x8b16588, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#41 0x0114d059 in QEventLoop::processEvents (this=0xbfaca854, flags=) at kernel/qeventloop.cpp:149
#42 0x0114d4aa in QEventLoop::exec (this=0xbfaca854, flags=...) at kernel/qeventloop.cpp:201
#43 0x0115169f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#44 0x06f12577 in QApplication::exec () at kernel/qapplication.cpp:3579
#45 0x0804b472 in main (argc=1, argv=0xbfacab14) at ../../../kontact/src/main.cpp:224

Possible duplicates by query: bug 220650, bug 200476.

Reported using DrKonqi