Application: plasma-desktop (0.3)
KDE Platform Version: 4.5.1 (KDE 4.5.1)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-22-generic x86_64
Distribution: Ubuntu 10.10

-- Information about the crash:
- What I was doing when the application crashed:
When starting evolution, KDE plasma crashes, and the toolbar panel disappears. No other programs are affected. After that, it restarts and all programs, including evolution, work OK.
My platform is kubuntu maverick.

The crash can be reproduced every time.

-- Backtrace:
Application: Área de trabajo de Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f7b55c1f780 (LWP 2177))]

Thread 2 (Thread 0x7f7b2ec65710 (LWP 2246)):
#0  0x00007f7b5283e665 in pthread_mutex_lock () from /lib/libpthread.so.0
#1  0x00007f7b4a1b0131 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f7b4a1b045c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f7b52be71e6 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#4  0x00007f7b52bb9a02 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#5  0x00007f7b52bb9dec in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#6  0x00007f7b52ac42fd in QThread::exec() () from /usr/lib/libQtCore.so.4
#7  0x00007f7b52b995f8 in ?? () from /usr/lib/libQtCore.so.4
#8  0x00007f7b52ac727e in ?? () from /usr/lib/libQtCore.so.4
#9  0x00007f7b5283c971 in start_thread () from /lib/libpthread.so.0
#10 0x00007f7b5553e91d in clone () from /lib/libc.so.6
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f7b55c1f780 (LWP 2177)):
[KCrash Handler]
#6  findActionItemForAction (this=0x1628300, event=<value optimized out>) at /build/buildd/plasma-widget-message-indicator-0.5.6/src/listenermodel.cpp:189
#7  removeAction (this=0x1628300, event=<value optimized out>) at /build/buildd/plasma-widget-message-indicator-0.5.6/src/listenermodel.cpp:177
#8  ServerItem::eventFilter (this=0x1628300, event=<value optimized out>) at /build/buildd/plasma-widget-message-indicator-0.5.6/src/listenermodel.cpp:150
#9  0x00007f7b52bba507 in QCoreApplicationPrivate::sendThroughObjectEventFilters(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#10 0x00007f7b51d04fac in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#11 0x00007f7b51d0aaed in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#12 0x00007f7b53856156 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#13 0x00007f7b52bbacdc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#14 0x00007f7b51d50bf1 in QWidget::removeAction(QAction*) () from /usr/lib/libQtGui.so.4
#15 0x00007f7b52165350 in QMenu::clear() () from /usr/lib/libQtGui.so.4
#16 0x00007f7b4b4d3324 in DBusMenuImporter::GetChildrenCallback(int, QDBusPendingCallWatcher*) () from /usr/lib/libdbusmenu-qt.so.2
#17 0x00007f7b4b4d2315 in DBusMenuImporter::dispatch(QDBusPendingCallWatcher*) () from /usr/lib/libdbusmenu-qt.so.2
#18 0x00007f7b4b4d69dc in DBusMenuImporter::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libdbusmenu-qt.so.2
#19 0x00007f7b52bd2b27 in QMetaObject::activate(QObject*, QMetaObject const*, int, void**) () from /usr/lib/libQtCore.so.4
#20 0x00007f7b52f4b37f in QDBusPendingCallWatcher::finished(QDBusPendingCallWatcher*) () from /usr/lib/libQtDBus.so.4
#21 0x00007f7b52f4b409 in QDBusPendingCallWatcher::qt_metacall(QMetaObject::Call, int, void**) () from /usr/lib/libQtDBus.so.4
#22 0x00007f7b52bccbde in QObject::event(QEvent*) () from /usr/lib/libQtCore.so.4
#23 0x00007f7b51d04fdc in QApplicationPrivate::notify_helper(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#24 0x00007f7b51d0aaed in QApplication::notify(QObject*, QEvent*) () from /usr/lib/libQtGui.so.4
#25 0x00007f7b53856156 in KApplication::notify(QObject*, QEvent*) () from /usr/lib/libkdeui.so.5
#26 0x00007f7b52bbacdc in QCoreApplication::notifyInternal(QObject*, QEvent*) () from /usr/lib/libQtCore.so.4
#27 0x00007f7b52bbdc22 in QCoreApplicationPrivate::sendPostedEvents(QObject*, int, QThreadData*) () from /usr/lib/libQtCore.so.4
#28 0x00007f7b52be7653 in ?? () from /usr/lib/libQtCore.so.4
#29 0x00007f7b4a1ac342 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#30 0x00007f7b4a1b02a8 in ?? () from /lib/libglib-2.0.so.0
#31 0x00007f7b4a1b045c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#32 0x00007f7b52be7193 in QEventDispatcherGlib::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#33 0x00007f7b51db7a4e in ?? () from /usr/lib/libQtGui.so.4
#34 0x00007f7b52bb9a02 in QEventLoop::processEvents(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#35 0x00007f7b52bb9dec in QEventLoop::exec(QFlags<QEventLoop::ProcessEventsFlag>) () from /usr/lib/libQtCore.so.4
#36 0x00007f7b52bbdebb in QCoreApplication::exec() () from /usr/lib/libQtCore.so.4
#37 0x00007f7b55815a56 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#38 0x00007f7b55476d8e in __libc_start_main () from /lib/libc.so.6
#39 0x0000000000400669 in _start ()

Reported using DrKonqi