Application: kmail (1.13.6)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic i686
Distribution: Ubuntu 11.04

-- Information about the crash:
Kmail almost always crashes after sending an email.
Nevertheless, in all the cases the email is sended correctly.
It also happens when moving mails into other folders.

The crash can be reproduced some of the time.

-- Backtrace:
Application: KMail (kmail), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7897780 (LWP 1907))]

Thread 3 (Thread 0xb4d45b70 (LWP 1910)):
#0  0x00e71416 in __kernel_vsyscall ()
#1  0x015a6f76 in poll () from /lib/i386-linux-gnu/libc.so.6
#2  0x0755f84b in g_poll () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x0754f1af in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x0754f92b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x02f58304 in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#6  0x075782df in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#7  0x00d4be99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#8  0x015b573e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 2 (Thread 0xb18c7b70 (LWP 1911)):
#0  0x00d4f7af in __pthread_mutex_unlock_usercnt () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x015c3656 in pthread_mutex_unlock () from /lib/i386-linux-gnu/libc.so.6
#2  0x0754d8eb in g_main_context_release () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x0754f04f in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x0754f524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#5  0x00504577 in QEventDispatcherGlib::processEvents (this=0x9569238, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#6  0x004d6289 in QEventLoop::processEvents (this=0xb18c7220, flags=...) at kernel/qeventloop.cpp:149
#7  0x004d6522 in QEventLoop::exec (this=0xb18c7220, flags=...) at kernel/qeventloop.cpp:201
#8  0x003e02a0 in QThread::exec (this=0x95ad988) at thread/qthread.cpp:492
#9  0x004b7fdb in QInotifyFileSystemWatcherEngine::run (this=0x95ad988) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x003e2da2 in QThreadPrivate::start (arg=0x95ad988) at thread/qthread_unix.cpp:320
#11 0x00d4be99 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#12 0x015b573e in clone () from /lib/i386-linux-gnu/libc.so.6

Thread 1 (Thread 0xb7897780 (LWP 1907)):
[KCrash Handler]
#7  0x01258f9d in KMail::SearchJob::slotSearchDataSingleMessage (this=0x9a652c8, job=0x9b49070, data=...) at ../../kmail/searchjob.cpp:424
#8  0x0125ac72 in KMail::SearchJob::qt_metacall (this=0x9a652c8, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbf9d45b0) at ./searchjob.moc:95
#9  0x004dd6ba in QMetaObject::metacall (object=0x9a652c8, cl=QMetaObject::InvokeMetaMethod, idx=18, argv=0xbf9d45b0) at kernel/qmetaobject.cpp:237
#10 0x004ed4ff in QMetaObject::activate (sender=0x9b49070, m=0x379548, local_signal_index=7, argv=0xbf9d45b0) at kernel/qobject.cpp:3287
#11 0x0022505f in KJob::infoMessage (this=0x9b49070, _t1=0x9b49070, _t2=..., _t3=...) at ./kjob.moc:208
#12 0x02af1831 in KIO::SimpleJobPrivate::_k_slotSlaveInfoMessage (this=0xa03c178, msg=...) at ../../kio/kio/job.cpp:547
#13 0x02af2e70 in KIO::SimpleJob::qt_metacall (this=0x9b49070, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbf9d4708) at ./jobclasses.moc:178
#14 0x004dd6ba in QMetaObject::metacall (object=0x9b49070, cl=QMetaObject::InvokeMetaMethod, idx=39, argv=0xbf9d4708) at kernel/qmetaobject.cpp:237
#15 0x004ed4ff in QMetaObject::activate (sender=0x95a59c8, m=0x2c766c4, local_signal_index=21, argv=0xbf9d4708) at kernel/qobject.cpp:3287
#16 0x02ba1cf3 in KIO::SlaveInterface::infoMessage (this=0x95a59c8, _t1=...) at ./slaveinterface.moc:287
#17 0x02ba4a95 in KIO::SlaveInterface::dispatch (this=0x95a59c8, _cmd=26, rawdata=...) at ../../kio/kio/slaveinterface.cpp:292
#18 0x02ba0e53 in KIO::SlaveInterface::dispatch (this=0x95a59c8) at ../../kio/kio/slaveinterface.cpp:89
#19 0x02b935c8 in KIO::Slave::gotInput (this=0x95a59c8) at ../../kio/kio/slave.cpp:348
#20 0x02b93cf3 in KIO::Slave::qt_metacall (this=0x95a59c8, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0xbf9d49ec) at ./slave.moc:82
#21 0x004dd6ba in QMetaObject::metacall (object=0x95a59c8, cl=QMetaObject::InvokeMetaMethod, idx=30, argv=0xbf9d49ec) at kernel/qmetaobject.cpp:237
#22 0x004ed4ff in QMetaObject::activate (sender=0x94e5248, m=0x2c73440, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3287
#23 0x02abe237 in KIO::Connection::readyRead (this=0x94e5248) at ./connection.moc:92
#24 0x02abea56 in KIO::ConnectionPrivate::dequeue (this=0x973ddd0) at ../../kio/kio/connection.cpp:82
#25 0x02abeb06 in KIO::Connection::qt_metacall (this=0x94e5248, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x9f528f8) at ./connection.moc:79
#26 0x004dd6ba in QMetaObject::metacall (object=0x94e5248, cl=QMetaObject::InvokeMetaMethod, idx=5, argv=0x9f528f8) at kernel/qmetaobject.cpp:237
#27 0x004e7e16 in QMetaCallEvent::placeMetaCall (this=0xa0f92a8, object=0x94e5248) at kernel/qobject.cpp:535
#28 0x004ec3b7 in QObject::event (this=0x94e5248, e=0xa0f92a8) at kernel/qobject.cpp:1226
#29 0x05965d24 in QApplicationPrivate::notify_helper (this=0x90c39d8, receiver=0x94e5248, e=0xa0f92a8) at kernel/qapplication.cpp:4462
#30 0x0596a8ce in QApplication::notify (this=0xbf9d539c, receiver=0x94e5248, e=0xa0f92a8) at kernel/qapplication.cpp:3862
#31 0x00a4b3ca in KApplication::notify (this=0xbf9d539c, receiver=0x94e5248, event=0xa0f92a8) at ../../kdeui/kernel/kapplication.cpp:311
#32 0x004d70bb in QCoreApplication::notifyInternal (this=0xbf9d539c, receiver=0x94e5248, event=0xa0f92a8) at kernel/qcoreapplication.cpp:731
#33 0x004dac79 in sendEvent (receiver=0x0, event_type=0, data=0x9058f28) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#34 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9058f28) at kernel/qcoreapplication.cpp:1372
#35 0x004dae0d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1265
#36 0x005043c4 in sendPostedEvents (s=0x90c5e90) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#37 postEventSourceDispatch (s=0x90c5e90) at kernel/qeventdispatcher_glib.cpp:277
#38 0x0754eaa8 in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#39 0x0754f270 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#40 0x0754f524 in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#41 0x0050453c in QEventDispatcherGlib::processEvents (this=0x9058a80, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#42 0x05a19775 in QGuiEventDispatcherGlib::processEvents (this=0x9058a80, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#43 0x004d6289 in QEventLoop::processEvents (this=0xbf9d5264, flags=...) at kernel/qeventloop.cpp:149
#44 0x004d6522 in QEventLoop::exec (this=0xbf9d5264, flags=...) at kernel/qeventloop.cpp:201
#45 0x004daecc in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#46 0x059638e7 in QApplication::exec () at kernel/qapplication.cpp:3736
#47 0x0804a733 in main (argc=) at ../../kmail/main.cpp:158

Reported using DrKonqi