Application that crashed: kmail
Version of the application: 1.12.1
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.30 i686
Distribution: Debian GNU/Linux testing (squeeze)

What I was doing when the application crashed:
1. Added a new filter with several conditions, one of which uses regexes
2. Selected one message that matches the filter
3. Pressed Ctrl+J
4. KMail crashed

The crash is repeatable: if I reopen KMail, and proceed from step 2 on, it crashes again.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[KCrash Handler]
#6  0x4444ae34 in KMail::ActionScheduler::actionMessage (this=<value optimized out>, res=<value optimized out>) at ../../kmail/actionscheduler.cpp:675
#7  0x4444bdbe in KMail::ActionScheduler::filterMessage (this=<value optimized out>) at ../../kmail/actionscheduler.cpp:648
#8  0x4444c033 in KMail::ActionScheduler::qt_metacall (this=<value optimized out>, _c=<value optimized out>, _id=<value optimized out>, _a=<value optimized out>) at ./actionscheduler.moc:124
#9  0x41794193 in QMetaObject::activate (sender=<value optimized out>, from_signal_index=<value optimized out>, to_signal_index=<value optimized out>, argv=<value optimized out>)
    at kernel/qobject.cpp:3112
#10 0x41794de2 in QMetaObject::activate (sender=<value optimized out>, m=<value optimized out>, local_signal_index=<value optimized out>, argv=) at kernel/qobject.cpp:3186
#11 0x417cf7d7 in QTimer::timeout (this=) at .moc/release-shared/moc_qtimer.cpp:128
#12 0x4179a4fe in QTimer::timerEvent (this=<value optimized out>, e=<value optimized out>) at kernel/qtimer.cpp:261
#13 0x4178f22f in QObject::event (this=<value optimized out>, e=<value optimized out>) at kernel/qobject.cpp:1074
#14 0x43a01814 in QApplicationPrivate::notify_helper (this=<value optimized out>, receiver=<value optimized out>, e=<value optimized out>) at kernel/qapplication.cpp:4056
#15 0x43a0997e in QApplication::notify (this=<value optimized out>, receiver=<value optimized out>, e=<value optimized out>) at kernel/qapplication.cpp:3603
#16 0x41e2aead in KApplication::notify (this=<value optimized out>, receiver=<value optimized out>, event=<value optimized out>) at ../../kdeui/kernel/kapplication.cpp:302
#17 0x4177f02b in QCoreApplication::notifyInternal (this=<value optimized out>, receiver=<value optimized out>, event=<value optimized out>) at kernel/qcoreapplication.cpp:610
#18 0x417ad9c1 in QCoreApplication::sendEvent (this=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#19 QTimerInfoList::activateTimers (this=<value optimized out>) at kernel/qeventdispatcher_unix.cpp:572
#20 0x417a9f60 in timerSourceDispatch (source=) at kernel/qeventdispatcher_glib.cpp:165
#21 0x41430e98 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#22 0x41434623 in ?? () from /lib/libglib-2.0.so.0
#23 0x414347a8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#24 0x417a9eb8 in QEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#25 0x43aa0fd5 in QGuiEventDispatcherGlib::processEvents (this=) at kernel/qguieventdispatcher_glib.cpp:202
#26 0x4177d67a in QEventLoop::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qeventloop.cpp:149
#27 0x4177dac2 in QEventLoop::exec (this=<value optimized out>, flags=<value optimized out>) at kernel/qeventloop.cpp:201
#28 0x4177ff19 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#29 0x43a01697 in QApplication::exec () at kernel/qapplication.cpp:3525
#30 0x0804a6d0 in main (argc=17, argv=0x8) at ../../kmail/main.cpp:146

This bug may be a duplicate of or related to bug 207567

Reported using DrKonqi