Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.3 (KDE 4.4.3)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-3-686 i686
Distribution: Debian GNU/Linux testing (squeeze)

-- Information about the crash:
Just installed KDE4.4.3 from Debian testing. Using Nvidia BLOBs. Using folder view, application, device notifier, lancelot, desktop pager, taskbar, system tray, digital clock and ktorrent wedgets. I normally have all but ktrorrent up with no issues.

Here's my guess as to what triggered the crash.
While the ktorrent widget was displaying a particular torrent that had completed, I opened ktorrent and removed that torrent from the list. 
If that doesn't recreate the crash, try forcing a seeding torrent to complete by reducing the minimum ratio in ktorrent and then removing it while that torrent is displayed in the ktorrent widget.


 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[KCrash Handler]
#6  0x00000029 in ?? ()
#7  0xb7509158 in Plasma::ToolTipManagerPrivate::showToolTip (this=0xa38a228) at ../../plasma/tooltipmanager.cpp:375
#8  0xb7509671 in Plasma::ToolTipManager::qt_metacall (this=0x937ce90, _c=QMetaObject::InvokeMetaMethod, _id=6, _a=0xbfb977fc) at ./tooltipmanager.moc:88
#9  0xb5a9baea in QMetaObject::metacall (object=0x937ce90, cl=3216602600, idx=6, argv=0xbfb977fc) at kernel/qmetaobject.cpp:237
#10 0xb5aaa0b5 in QMetaObject::activate (sender=0x942bdd8, m=0xb5ba9704, local_signal_index=0, argv=0x0) at kernel/qobject.cpp:3293
#11 0xb5afb927 in QTimer::timeout (this=0x942bdd8) at .moc/release-shared/moc_qtimer.cpp:134
#12 0xb5ab233e in QTimer::timerEvent (this=0x942bdd8, e=0xbfb97d30) at kernel/qtimer.cpp:271
#13 0xb5aa6f34 in QObject::event (this=0x942bdd8, e=0xa385390) at kernel/qobject.cpp:1212
#14 0xb5d7fbec in QApplicationPrivate::notify_helper (this=0x911c840, receiver=0x942bdd8, e=0xbfb97d30) at kernel/qapplication.cpp:4300
#15 0xb5d8675e in QApplication::notify (this=0x9106618, receiver=0x942bdd8, e=0xbfb97d30) at kernel/qapplication.cpp:3704
#16 0xb6afe7da in KApplication::notify (this=0x9106618, receiver=0x942bdd8, event=0xbfb97d30) at ../../kdeui/kernel/kapplication.cpp:302
#17 0xb5a968eb in QCoreApplication::notifyInternal (this=0x9106618, receiver=0x942bdd8, event=0xbfb97d30) at kernel/qcoreapplication.cpp:704
#18 0xb5ac5946 in QCoreApplication::sendEvent (this=0x911f29c) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x911f29c) at kernel/qeventdispatcher_unix.cpp:603
#20 0xb5ac2637 in timerSourceDispatch (source=0x911f700) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=0x911f700) at kernel/qeventdispatcher_glib.cpp:231
#22 0xb3f0c2f5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#23 0xb3f0ffd8 in ?? () from /lib/libglib-2.0.so.0
#24 0xb3f101b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#25 0xb5ac22f5 in QEventDispatcherGlib::processEvents (this=0x90d7b98, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#26 0xb5e3e255 in QGuiEventDispatcherGlib::processEvents (this=0x90d7b98, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#27 0xb5a94f09 in QEventLoop::processEvents (this=0xbfb97ff4, flags=) at kernel/qeventloop.cpp:149
#28 0xb5a9535a in QEventLoop::exec (this=0xbfb97ff4, flags=...) at kernel/qeventloop.cpp:201
#29 0xb5a994ef in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#30 0xb5d7fc87 in QApplication::exec () at kernel/qapplication.cpp:3579
#31 0xb77a1fae in kdemain (argc=1, argv=0xbfb981d4) at ../../../../plasma/desktop/shell/main.cpp:112
#32 0x0804861b in main (argc=1, argv=0xbfb981d4) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 234648, bug 227578.

Reported using DrKonqi