Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.1 (KDE 4.4.1)
Qt Version: 4.6.2
Operating System: Linux 2.6.31-20-generic i686
Distribution: Ubuntu 9.10

-- Information about the crash:
Hi,
kde 4.4.1 kubuntu
I installed evolution + alltray, 
Start evolution with command "alltray evolution"
Now click on icon in system tray: evolution window appears
Now click again --> plasma crashes
Even a restart of plasma is now not possible, plasma crashes  everytime when it tries to restart.
Regards

The crash can be reproduced every time.

 -- Backtrace:
Application: Plasma-Arbeitsfläche (kdeinit4), signal: Segmentation fault
[KCrash Handler]
#6  0x063b8c2c in TaskManager::Task::icon(int, int, bool) () from /usr/lib/libtaskmanager.so.4
#7  0x06c1c84a in ?? () from /usr/lib/kde4/plasma_applet_daisy.so
#8  0x06c25d13 in ?? () from /usr/lib/kde4/plasma_applet_daisy.so
#9  0x00d15e5a in QMetaObject::metacall (object=0x9466b48, cl=QMetaObject::InvokeMetaMethod, idx=-1076817084, argv=0x20) at kernel/qmetaobject.cpp:237
#10 0x00d245f5 in QMetaObject::activate (sender=0x92a7520, m=0xa1810c, local_signal_index=9, argv=0xbfd114a4) at kernel/qobject.cpp:3293
#11 0x009a5ca9 in KWindowSystem::windowChanged (this=0x92a7520, _t1=48234611, _t2=0xbfd11504) at ./kwindowsystem.moc:178
#12 0x009a8da6 in KWindowSystemPrivate::x11Event (this=0x92a7438, ev=0xbfd119dc) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:180
#13 0x00847ad6 in KAppX11HackWidget::publicx11Event (this=0x9070910, _event=0xbfd119dc) at ../../kdeui/kernel/kapplication.cpp:903
#14 KApplication::x11EventFilter (this=0x9070910, _event=0xbfd119dc) at ../../kdeui/kernel/kapplication.cpp:953
#15 0x06426e1a in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#16 0x0103b280 in qt_x11EventFilter (ev=0xbfd119dc) at kernel/qapplication_x11.cpp:399
#17 0x0104aa90 in QApplication::x11ProcessEvent (this=0x9070910, event=0xbfd119dc) at kernel/qapplication_x11.cpp:3231
#18 0x0107b00a in x11EventSourceDispatch (s=0x9078eb0, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#19 0x040f5e88 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#20 0x040f9730 in ?? () from /lib/libglib-2.0.so.0
#21 0x040f9863 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#22 0x00d3c805 in QEventDispatcherGlib::processEvents (this=0x9076400, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#23 0x0107ab35 in QGuiEventDispatcherGlib::processEvents (this=0x9076400, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#24 0x00d0f209 in QEventLoop::processEvents (this=0xbfd11cd4, flags=) at kernel/qeventloop.cpp:149
#25 0x00d0f65a in QEventLoop::exec (this=0xbfd11cd4, flags=...) at kernel/qeventloop.cpp:201
#26 0x00d1384f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#27 0x00fbb467 in QApplication::exec () at kernel/qapplication.cpp:3579
#28 0x0641317e in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#29 0x0804dff7 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x90478f8 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051405 "0") at ../../kinit/kinit.cpp:717
#30 0x0804ec15 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1209
#31 0x0804f08c in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1402
#32 0x0804fe2f in main (argc=4, argv=0xbfd12784, envp=0xbfd12798) at ../../kinit/kinit.cpp:1841

Reported using DrKonqi