Application: kmail (1.13.1)
KDE Platform Version: 4.4.1 (KDE 4.4.1)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-16-generic x86_64
Distribution: Ubuntu lucid (development branch)

-- Information about the crash:
My KMail configs were imported from Kubuntu 8.04, maybe there are some deprecated options.

The crash can be reproduced some of the time.

 -- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f6d190c9820 (LWP 2809))]

Thread 2 (Thread 0x7f6cf8a28710 (LWP 2848)):
#0  0x00007f6d15bd9f93 in *__GI___poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=-1) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f6d0d376019 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#2  0x0000000000000001 in ?? ()
#3  0x00007f6cf8a28710 in ?? ()
#4  0x00007f6d0d37646c in ?? () from /lib/libglib-2.0.so.0
#5  0x000000000112b600 in ?? ()
#6  0x00007f6cf8a27d10 in ?? ()
#7  0x00007f6d16519cfc in QEventLoop::exec (this=0x7f6d16519922, flags=) at kernel/qeventloop.cpp:201
#8  0x00007f6d16423d59 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#9  0x00007f6d164fa118 in QInotifyFileSystemWatcherEngine::run (this=0x1061500) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f6d16426775 in QThreadPrivate::start (arg=0x1061500) at thread/qthread_unix.cpp:248
#11 0x00007f6d140319ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#12 0x00007f6d15be66dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f6d190c9820 (LWP 2809)):
[KCrash Handler]
#5  QBasicAtomicInt::ref (this=0x2ce5670, item=0x2cca6d0) at /usr/include/qt4/QtCore/qatomic_x86_64.h:121
#6  QString (this=0x2ce5670, item=0x2cca6d0) at /usr/include/qt4/QtCore/qstring.h:715
#7  RecipientItem::key (this=0x2ce5670, item=0x2cca6d0) at ../../kmail/recipientspicker.h:70
#8  RecipientsCollection::getEquivalentItem (this=0x2ce5670, item=0x2cca6d0) at ../../kmail/recipientspicker.cpp:277
#9  0x00007f6d17cff900 in RecipientsPicker::updateList (this=<value optimized out>) at ../../kmail/recipientspicker.cpp:699
#10 0x00007f6d17d03502 in RecipientsPicker::setRecipients (this=<value optimized out>, recipients=<value optimized out>) at ../../kmail/recipientspicker.cpp:644
#11 0x00007f6d17cfa039 in SideWidget::pickRecipient (this=0x244c940) at ../../kmail/recipientseditor.cpp:852
#12 0x00007f6d17cfb674 in SideWidget::qt_metacall (this=0x244c940, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff3ea09240) at ./recipientseditor.moc:528
#13 0x00007f6d1652ddcf in QMetaObject::activate (sender=0x244dcd0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0xfffffffffff7ada8) at kernel/qobject.cpp:3293
#14 0x00007f6d17089542 in QAbstractButton::clicked (this=0x2ce5670, _t1=false) at .moc/release-shared/moc_qabstractbutton.cpp:206
#15 0x00007f6d16da37db in QAbstractButtonPrivate::emitClicked (this=0x244dd80) at widgets/qabstractbutton.cpp:546
#16 0x00007f6d16da467b in QAbstractButtonPrivate::click (this=0x244dd80) at widgets/qabstractbutton.cpp:539
#17 0x00007f6d16da48ec in QAbstractButton::mouseReleaseEvent (this=0x244dcd0, e=0x7fff3ea09b90) at widgets/qabstractbutton.cpp:1121
#18 0x00007f6d16a44592 in QWidget::event (this=0x244dcd0, event=0x7fff3ea09b90) at kernel/qwidget.cpp:7998
#19 0x00007f6d169ee22c in QApplicationPrivate::notify_helper (this=0x9159d0, receiver=0x244dcd0, e=0x7fff3ea09b90) at kernel/qapplication.cpp:4300
#20 0x00007f6d169f4edb in QApplication::notify (this=0x7fff3ea0a9b0, receiver=0x244dcd0, e=0x7fff3ea09b90) at kernel/qapplication.cpp:3865
#21 0x00007f6d18af5506 in KApplication::notify (this=0x7fff3ea0a9b0, receiver=0x244dcd0, event=0x7fff3ea09b90) at ../../kdeui/kernel/kapplication.cpp:302
#22 0x00007f6d1651affc in QCoreApplication::notifyInternal (this=0x7fff3ea0a9b0, receiver=0x244dcd0, event=0x7fff3ea09b90) at kernel/qcoreapplication.cpp:704
#23 0x00007f6d169f40ae in QCoreApplication::sendEvent (receiver=0x244dcd0, event=0x7fff3ea09b90, alienWidget=0x0, nativeWidget=0x244dcd0, buttonDown=<value optimized out>, 
    lastMouseReceiver=<value optimized out>, spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#24 QApplicationPrivate::sendMouseEvent (receiver=0x244dcd0, event=0x7fff3ea09b90, alienWidget=0x0, nativeWidget=0x244dcd0, buttonDown=<value optimized out>, lastMouseReceiver=<value optimized out>, 
    spontaneous=true) at kernel/qapplication.cpp:2965
#25 0x00007f6d16a73f75 in QETWidget::translateMouseEvent (this=0x244dcd0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4368
#26 0x00007f6d16a728bc in QApplication::x11ProcessEvent (this=<value optimized out>, event=0x7fff3ea0a4b0) at kernel/qapplication_x11.cpp:3501
#27 0x00007f6d16a9e722 in x11EventSourceDispatch (s=0x8f3b50, callback=<value optimized out>, user_data=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:146
#28 0x00007f6d0d372432 in ?? () from /lib/libglib-2.0.so.0
#29 0x0000000000000000 in ?? ()

This bug may be a duplicate of or related to bug 217229.

Possible duplicates by query: bug 227938, bug 219504, bug 217229.

Reported using DrKonqi