Application: kontact (4.4.2)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-20-generic x86_64
Distribution: Ubuntu lucid (development branch)

-- Information about the crash:
I was using Akregator, it crashed when I clicked to detach tab

 -- Backtrace:
Application: Kontact (kontact), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f6b18732780 (LWP 2533))]

Thread 2 (Thread 0x7f6aedb34710 (LWP 2758)):
#0  0x00007f6b108bfa33 in __pthread_mutex_unlock_usercnt (mutex=0x36be1c8) at pthread_mutex_unlock.c:52
#1  __pthread_mutex_unlock (mutex=0x36be1c8) at pthread_mutex_unlock.c:290
#2  0x00007f6b0e344b01 in g_main_context_check () from /lib/libglib-2.0.so.0
#3  0x00007f6b0e3454c3 in ?? () from /lib/libglib-2.0.so.0
#4  0x00007f6b0e3458fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#5  0x00007f6b16bfa566 in QEventDispatcherGlib::processEvents (this=0x36be0d0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:414
#6  0x00007f6b16bcf992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#7  0x00007f6b16bcfd6c in QEventLoop::exec (this=0x7f6aedb33d90, flags=) at kernel/qeventloop.cpp:201
#8  0x00007f6b16ad9d59 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:487
#9  0x00007f6b16bb0178 in QInotifyFileSystemWatcherEngine::run (this=0x360eba0) at io/qfilesystemwatcher_inotify.cpp:248
#10 0x00007f6b16adc775 in QThreadPrivate::start (arg=0x360eba0) at thread/qthread_unix.cpp:248
#11 0x00007f6b108bb9ca in start_thread (arg=<value optimized out>) at pthread_create.c:300
#12 0x00007f6b1581c6dd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f6b18732780 (LWP 2533)):
[KCrash Handler]
#5  0x00007f6b16bd5d07 in QMetaObject::cast (this=0x7f6b15214800, obj=0x7f6b183298b0) at kernel/qmetaobject.cpp:266
#6  0x00007f6b14b3dc63 in KHTMLPart::toplevelURL (this=0x7f6b183298b0) at ../../khtml/khtml_part.cpp:7188
#7  0x00007f6b14d1b664 in khtml::Loader::servePendingRequests (this=0x29aca30) at ../../khtml/misc/loader.cpp:1404
#8  0x00007f6b14d1e1d4 in khtml::Loader::qt_metacall (this=0x29aca30, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff20207b40) at ./loader.moc:146
#9  0x00007f6b16be3e3f in QMetaObject::activate (sender=0x29aca58, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x39c68f0) at kernel/qobject.cpp:3293
#10 0x00007f6b16be0a63 in QObject::event (this=0x29aca58, e=0x7fff20208290) at kernel/qobject.cpp:1212
#11 0x00007f6b15f8a22c in QApplicationPrivate::notify_helper (this=0x263af00, receiver=0x29aca58, e=0x7fff20208290) at kernel/qapplication.cpp:4300
#12 0x00007f6b15f906fb in QApplication::notify (this=0x7fff202085f0, receiver=0x29aca58, e=0x7fff20208290) at kernel/qapplication.cpp:4183
#13 0x00007f6b175b9526 in KApplication::notify (this=0x7fff202085f0, receiver=0x29aca58, event=0x7fff20208290) at ../../kdeui/kernel/kapplication.cpp:302
#14 0x00007f6b16bd106c in QCoreApplication::notifyInternal (this=0x7fff202085f0, receiver=0x29aca58, event=0x7fff20208290) at kernel/qcoreapplication.cpp:704
#15 0x00007f6b16bfdd42 in QCoreApplication::sendEvent (this=0x2641320) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#16 QTimerInfoList::activateTimers (this=0x2641320) at kernel/qeventdispatcher_unix.cpp:603
#17 0x00007f6b16bfa824 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#18 0x00007f6b0e3418c2 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#19 0x00007f6b0e345748 in ?? () from /lib/libglib-2.0.so.0
#20 0x00007f6b0e3458fc in g_main_context_iteration () from /lib/libglib-2.0.so.0
#21 0x00007f6b16bfa513 in QEventDispatcherGlib::processEvents (this=0x2604d70, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:412
#22 0x00007f6b1603a46e in QGuiEventDispatcherGlib::processEvents (this=0x7f6b183298b0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#23 0x00007f6b16bcf992 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#24 0x00007f6b16bcfd6c in QEventLoop::exec (this=0x7fff20208530, flags=) at kernel/qeventloop.cpp:201
#25 0x00007f6b16bd3aab in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#26 0x0000000000403e8e in _start ()

Reported using DrKonqi