Application: kontact (4.8.3)
KDE Platform Version: 4.8.3 (4.8.3) "release 501"
Qt Version: 4.8.1
Operating System: Linux 3.2.9-13-desktop i686
Distribution: "openSUSE 12.1 (i586)"

-- Information about the crash:
I clicked on a different folder in the folder list which had 2 unread mails in it, then Kontact crashed.

-- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0xb25b6710 (LWP 3703))]

Thread 4 (Thread 0xb12d8b70 (LWP 3704)):
#0  0xb3c37782 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0xb60875cc in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libc.so.6
#2  0xb583a189 in WTF::TCMalloc_PageHeap::scavengerThread (this=0xb5f43340) at ../../../Source/JavaScriptCore/wtf/FastMalloc.cpp:2495
#3  0xb583a1cf in WTF::TCMalloc_PageHeap::runScavengerThread (context=0xb5f43340) at ../../../Source/JavaScriptCore/wtf/FastMalloc.cpp:1618
#4  0xb3c33a7d in start_thread () from /lib/libpthread.so.0
#5  0xb6079abe in clone () from /lib/libc.so.6

Thread 3 (Thread 0xb09b0b70 (LWP 3705)):
#0  0xb606ebb4 in poll () from /lib/libc.so.6
#1  0xb3b5bf7b in g_poll () from /usr/lib/libglib-2.0.so.0
#2  0xb3b4d466 in ?? () from /usr/lib/libglib-2.0.so.0
#3  0xb3b4d7fa in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#4  0xb63b3eb7 in QEventDispatcherGlib::processEvents (this=0xb0000468, flags=...) at kernel/qeventdispatcher_glib.cpp:426
#5  0xb637fd1d in QEventLoop::processEvents (this=0xb09b02d0, flags=...) at kernel/qeventloop.cpp:149
#6  0xb637ffb9 in QEventLoop::exec (this=0xb09b02d0, flags=...) at kernel/qeventloop.cpp:204
#7  0xb6269d0c in QThread::exec (this=0x8083748) at thread/qthread.cpp:501
#8  0xb6269dfb in QThread::run (this=0x8083748) at thread/qthread.cpp:568
#9  0xb626d1f0 in QThreadPrivate::start (arg=0x8083748) at thread/qthread_unix.cpp:298
#10 0xb3c33a7d in start_thread () from /lib/libpthread.so.0
#11 0xb6079abe in clone () from /lib/libc.so.6

Thread 2 (Thread 0xad510b70 (LWP 6045)):
#0  0xb3c37b15 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0xb6087624 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/libc.so.6
#2  0xa9279fbf in ?? () from /usr/lib/libxine.so.1
#3  0xb3c33a7d in start_thread () from /lib/libpthread.so.0
#4  0xb6079abe in clone () from /lib/libc.so.6

Thread 1 (Thread 0xb25b6710 (LWP 3703)):
[KCrash Handler]
#6  ref (this=<optimized out>) at /usr/include/QtCore/qatomic_i386.h:120
#7  QList (l=<optimized out>, this=<optimized out>) at /usr/include/QtCore/qlist.h:122
#8  QForeachContainer (t=<optimized out>, this=<optimized out>) at /usr/include/QtCore/qglobal.h:2339
#9  KMime::Headers::Generics::MailboxList::prettyAddresses (this=0x0) at /usr/src/debug/kdepimlibs-4.8.3/kmime/kmime_headers.cpp:469
#10 0xb355e814 in KMime::Headers::Generics::MailboxList::asUnicodeString (this=0x0) at /usr/src/debug/kdepimlibs-4.8.3/kmime/kmime_headers.cpp:418
#11 0xaef61c78 in MessageList::StorageModel::initializeMessageItem (this=0x10be5a00, mi=0x10d29648, row=898, bUseReceiver=true) at /usr/src/debug/kdepim-4.8.3/messagelist/storagemodel.cpp:240
#12 0xaef156bf in MessageList::Core::ModelPrivate::viewItemJobStepInternalForJobPass1Fill (this=0x86c87b8, job=0x102be540, tStart=...) at /usr/src/debug/kdepim-4.8.3/messagelist/core/model.cpp:2740
#13 0xaef17eb8 in MessageList::Core::ModelPrivate::viewItemJobStepInternalForJob (this=0x86c87b8, job=0x102be540, tStart=...) at /usr/src/debug/kdepim-4.8.3/messagelist/core/model.cpp:3401
#14 0xaef185c0 in MessageList::Core::ModelPrivate::viewItemJobStepInternal (this=0x86c87b8) at /usr/src/debug/kdepim-4.8.3/messagelist/core/model.cpp:3788
#15 0xaef19155 in MessageList::Core::ModelPrivate::viewItemJobStep (this=0x86c87b8) at /usr/src/debug/kdepim-4.8.3/messagelist/core/model.cpp:3974
#16 0xb6397a0f in QMetaObject::activate (sender=0x86c87d4, m=0xb64df4d8, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3556
#17 0xb63eb495 in QTimer::timeout (this=0x86c87d4) at .moc/release-shared/moc_qtimer.cpp:148
#18 0xb63a09c6 in QTimer::timerEvent (this=0x86c87d4, e=0xbfda5688) at kernel/qtimer.cpp:280
#19 0xb639bee4 in QObject::event (this=0x86c87d4, e=0xbfda5688) at kernel/qobject.cpp:1166
#20 0xb6907504 in notify_helper (e=0xbfda5688, receiver=0x86c87d4, this=0x8075330) at kernel/qapplication.cpp:4554
#21 QApplicationPrivate::notify_helper (this=0x8075330, receiver=0x86c87d4, e=0xbfda5688) at kernel/qapplication.cpp:4526
#22 0xb690c913 in QApplication::notify (this=0xbfda5688, receiver=0x86c87d4, e=0xbfda5688) at kernel/qapplication.cpp:4283
#23 0xb749ebf1 in KApplication::notify (this=0xbfda59c4, receiver=0x86c87d4, event=0xbfda5688) at /usr/src/debug/kdelibs-4.8.3/kdeui/kernel/kapplication.cpp:311
#24 0xb63811ae in QCoreApplication::notifyInternal (this=0xbfda59c4, receiver=0x86c87d4, event=0xbfda5688) at kernel/qcoreapplication.cpp:876
#25 0xb63b5f4f in sendEvent (event=<optimized out>, receiver=<optimized out>) at kernel/qcoreapplication.h:231
#26 QTimerInfoList::activateTimers (this=0x807cea4) at kernel/qeventdispatcher_unix.cpp:626
#27 0xb63b3638 in timerSourceDispatch (source=0x807ce70) at kernel/qeventdispatcher_glib.cpp:186
#28 timerSourceDispatch (source=0x807ce70) at kernel/qeventdispatcher_glib.cpp:180
#29 0xb3b4ce2f in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0xb3b4d560 in ?? () from /usr/lib/libglib-2.0.so.0
#31 0xb3b4d7fa in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#32 0xb63b3e57 in QEventDispatcherGlib::processEvents (this=0x8052e88, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#33 0xb69bb53a in QGuiEventDispatcherGlib::processEvents (this=0x8052e88, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#34 0xb637fd1d in QEventLoop::processEvents (this=0xbfda5924, flags=...) at kernel/qeventloop.cpp:149
#35 0xb637ffb9 in QEventLoop::exec (this=0xbfda5924, flags=...) at kernel/qeventloop.cpp:204
#36 0xb638520a in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1148
#37 0xb6905374 in QApplication::exec () at kernel/qapplication.cpp:3815
#38 0x0804af91 in main (argc=) at /usr/src/debug/kdepim-4.8.3/kontact/src/main.cpp:218

Reported using DrKonqi