Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.31-20-generic i686
Distribution: Ubuntu 9.10

-- Information about the crash:
I just removed a desktop activity and Plasma crash, but after that the application rerun intself again a no more problems

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb78a8700 (LWP 1739))]

Thread 2 (Thread 0xabe68b70 (LWP 2160)):
#0  0x00590422 in __kernel_vsyscall ()
#1  0x00376e15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x0616b407 in ?? () from /usr/lib/libQtWebKit.so.4
#3  0x0616b451 in ?? () from /usr/lib/libQtWebKit.so.4
#4  0x0037280e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0x008dd8de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb78a8700 (LWP 1739)):
[KCrash Handler]
#6  Plasma::Corona::removeOffscreenWidget (this=0x0, widget=0xbfb8410) at ../../plasma/corona.cpp:509
#7  0x021a2eaf in ~ControllerWindow (this=0xa1439b8, __in_chrg=<value optimized out>) at ../../../../plasma/desktop/shell/controllerwindow.cpp:80
#8  0x00ff9f45 in qDeleteInEventHandler (o=0x0) at kernel/qobject.cpp:3998
#9  0x00ffb668 in QObject::event (this=0xa1439b8, e=0x0) at kernel/qobject.cpp:1231
#10 0x01294246 in QWidget::event (this=0xa1439b8, event=0xc206b28) at kernel/qwidget.cpp:8455
#11 0x012363cc in QApplicationPrivate::notify_helper (this=0x9ac5828, receiver=0xa1439b8, e=0xc206b28) at kernel/qapplication.cpp:4300
#12 0x0123d0b9 in QApplication::notify (this=0x9abf6f0, receiver=0xa1439b8, e=0xc206b28) at kernel/qapplication.cpp:4265
#13 0x00caa5ba in KApplication::notify (this=0x9abf6f0, receiver=0xa1439b8, event=0xc206b28) at ../../kdeui/kernel/kapplication.cpp:302
#14 0x00feabeb in QCoreApplication::notifyInternal (this=0x9abf6f0, receiver=0xa1439b8, event=0xc206b28) at kernel/qcoreapplication.cpp:704
#15 0x00fed623 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x9a795d8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#16 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x9a795d8) at kernel/qcoreapplication.cpp:1345
#17 0x00fed78d in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#18 0x01016d0f in QCoreApplication::sendPostedEvents (s=0x9ac7910) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#19 postEventSourceDispatch (s=0x9ac7910) at kernel/qeventdispatcher_glib.cpp:276
#20 0x05e80e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#21 0x05e84730 in ?? () from /lib/libglib-2.0.so.0
#22 0x05e84863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#23 0x01016805 in QEventDispatcherGlib::processEvents (this=0x9ac54f8, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#24 0x012f5b35 in QGuiEventDispatcherGlib::processEvents (this=0x9ac54f8, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#25 0x00fe9209 in QEventLoop::processEvents (this=0xbffe40b4, flags=) at kernel/qeventloop.cpp:149
#26 0x00fe965a in QEventLoop::exec (this=0xbffe40b4, flags=...) at kernel/qeventloop.cpp:201
#27 0x00fed84f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#28 0x01236467 in QApplication::exec () at kernel/qapplication.cpp:3579
#29 0x021b306e in kdemain (argc=1, argv=0x9ab3ee8) at ../../../../plasma/desktop/shell/main.cpp:112
#30 0x0804dff7 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x9a979e8 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051425 "0") at ../../kinit/kinit.cpp:717
#31 0x0804ec15 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1209
#32 0x0804f08c in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1402
#33 0x0804fe47 in main (argc=4, argv=0xbffe4b64, envp=0xbffe4b78) at ../../kinit/kinit.cpp:1845

Reported using DrKonqi