Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.96 (KDE 4.2.96 (KDE 4.3 RC2))
Qt Version: 4.5.0
Operating System: Linux 2.6.28-13-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
Kde freezes and plasma crashes when enabling compositing in "Desktop settings".
Video drivers : fglrx

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 4297)]

Thread 2 (Thread 0x7fb53f8ec950 (LWP 4299)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fb5624d1939 in QWaitCondition::wait (this=0x267f9e0, mutex=0x267f9d8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007fb56134d4cc in QHostInfoAgent::run (this=0x267f9c0) at kernel/qhostinfo.cpp:260
#3  0x00007fb5624d0952 in QThreadPrivate::start (arg=0x267f9c0) at thread/qthread_unix.cpp:189
#4  0x00007fb55e3513ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007fb55ef35fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fb562a9c750 (LWP 4297)):
[KCrash Handler]
#5  0x00007fb559ea15e0 in Plasma::ExtenderItem::config (this=0x2adef40) at /build/buildd/kde4libs-4.2.96/plasma/extenderitem.cpp:153
#6  0x00007fb559ea3152 in Plasma::ExtenderItem::isGroup (this=<value optimized out>) at /build/buildd/kde4libs-4.2.96/plasma/extenderitem.cpp:328
#7  0x00007fb559e998bc in Plasma::Extender::isEmpty (this=<value optimized out>) at /build/buildd/kde4libs-4.2.96/plasma/extender.cpp:717
#8  0x00007fb559e99919 in Plasma::ExtenderPrivate::updateEmptyExtenderLabel (this=0x1559490) at /build/buildd/kde4libs-4.2.96/plasma/extender.cpp:681
#9  0x00007fb559e9a067 in Plasma::Extender::itemAddedEvent (this=0x16f8d10, item=0x29d2760, pos=<value optimized out>) at /build/buildd/kde4libs-4.2.96/plasma/extender.cpp:432
#10 0x00007fb559e99300 in Plasma::ExtenderPrivate::addExtenderItem (this=0x1559490, item=0x29d2760, pos=@0x7fff6aacc310) at /build/buildd/kde4libs-4.2.96/plasma/extender.cpp:546
#11 0x00007fb559ea40e6 in Plasma::ExtenderItem::setExtender (this=0x29d2760, extender=0x16f8d10, pos=@0x7fff6aacc310) at /build/buildd/kde4libs-4.2.96/plasma/extenderitem.cpp:234
#12 0x00007fb559ea52c1 in ExtenderItem (this=0x29d2760, hostExtender=0x16f8d10, extenderItemId=<value optimized out>) at /build/buildd/kde4libs-4.2.96/plasma/extenderitem.cpp:129
#13 0x00007fb54594c020 in SystemTray::Applet::addNotification (this=0x15ec590, notification=0x1509c80) at /build/buildd/kdebase-workspace-4.2.96/plasma/applets/systemtray/ui/applet.cpp:600
#14 0x00007fb54595140f in SystemTray::Applet::qt_metacall (this=0x15ec590, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff6aacc630)
    at /build/buildd/kdebase-workspace-4.2.96/obj-x86_64-linux-gnu/plasma/applets/systemtray/applet.moc:85
#15 0x00007fb5625cf1f2 in QMetaObject::activate (sender=0x15923f0, from_signal_index=<value optimized out>, to_signal_index=7, argv=0x2be0cd0) at kernel/qobject.cpp:3069
#16 0x00007fb545930352 in SystemTray::Manager::notificationAdded (this=0x7fff6aacbe20, _t1=0x1509c80)
    at /build/buildd/kdebase-workspace-4.2.96/obj-x86_64-linux-gnu/plasma/applets/systemtray/manager.moc:146
#17 0x00007fb54593138f in SystemTray::Manager::qt_metacall (this=0x15923f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff6aacc760)
    at /build/buildd/kdebase-workspace-4.2.96/obj-x86_64-linux-gnu/plasma/applets/systemtray/manager.moc:109
#18 0x00007fb5625cf1f2 in QMetaObject::activate (sender=0x26835e0, from_signal_index=<value optimized out>, to_signal_index=6, argv=0x2be0cd0) at kernel/qobject.cpp:3069
#19 0x00007fb545931752 in SystemTray::Protocol::notificationCreated (this=0x7fff6aacbe20, _t1=0x1509c80)
    at /build/buildd/kdebase-workspace-4.2.96/obj-x86_64-linux-gnu/plasma/applets/systemtray/protocol.moc:99
#20 0x00007fb54593eb0c in SystemTray::DBusNotificationProtocol::dataUpdated (this=0x26835e0, source=<value optimized out>, data=<value optimized out>)
    at /build/buildd/kdebase-workspace-4.2.96/plasma/applets/systemtray/protocols/notifications/dbusnotificationprotocol.cpp:122
#21 0x00007fb54593f798 in SystemTray::DBusNotificationProtocol::qt_metacall (this=0x26835e0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff6aaccc20)
    at /build/buildd/kdebase-workspace-4.2.96/obj-x86_64-linux-gnu/plasma/applets/systemtray/dbusnotificationprotocol.moc:78
#22 0x00007fb5625c1f6e in QMetaMethod::invoke (this=0x7fff6aacced0, object=0x26835e0, connectionType=Qt::DirectConnection, returnValue=
        {<QGenericArgument> = {_data = 0x0, _name = 0x0}, <No data fields>}, val0={_data = 0x7fff6aacd2b0, _name = 0x7fb559f921d9 "QString"}, val1=
      {_data = 0x7fff6aacd2a0, _name = 0x7fb559f921e1 "Plasma::DataEngine::Data"}, val2={_data = 0x0, _name = 0x0}, val3={_data = 0x0, _name = 0x0}, val4={_data = 0x0, _name = 0x0}, val5=
      {_data = 0x0, _name = 0x0}, val6={_data = 0x0, _name = 0x0}, val7={_data = 0x0, _name = 0x0}, val8={_data = 0x0, _name = 0x0}, val9={_data = 0x0, _name = 0x0}) at kernel/qmetaobject.cpp:1513
#23 0x00007fb5625c277f in QMetaObject::invokeMethod (obj=0x26835e0, member=<value optimized out>, type=Qt::AutoConnection, ret={<QGenericArgument> = {_data = 0x0, _name = 0x0}, <No data fields>}, 
    val0={_data = 0x7fff6aacd2b0, _name = 0x7fb559f921d9 "QString"}, val1={_data = 0x7fff6aacd2a0, _name = 0x7fb559f921e1 "Plasma::DataEngine::Data"}, val2={_data = 0x0, _name = 0x0}, val3=
      {_data = 0x0, _name = 0x0}, val4={_data = 0x0, _name = 0x0}, val5={_data = 0x0, _name = 0x0}, val6={_data = 0x0, _name = 0x0}, val7={_data = 0x0, _name = 0x0}, val8={_data = 0x0, _name = 0x0}, 
    val9={_data = 0x0, _name = 0x0}) at kernel/qmetaobject.cpp:1109
#24 0x00007fb559e8da69 in Plasma::DataEnginePrivate::connectSource (this=<value optimized out>, s=0x1a0bfa0, visualization=0x26835e0, pollingInterval=<value optimized out>, 
    align=Plasma::NoAlignment, immediateCall=<value optimized out>) at /usr/include/qt4/QtCore/qobjectdefs.h:403
#25 0x00007fb559e8e0d9 in Plasma::DataEngine::connectSource (this=0x2682550, source=<value optimized out>, visualization=0x26835e0, pollingInterval=0, intervalAlignment=Plasma::NoAlignment)
    at /build/buildd/kde4libs-4.2.96/plasma/dataengine.cpp:94
#26 0x00007fb54593f7ac in SystemTray::DBusNotificationProtocol::qt_metacall (this=0x26835e0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff6aacd430)
    at /build/buildd/kdebase-workspace-4.2.96/obj-x86_64-linux-gnu/plasma/applets/systemtray/dbusnotificationprotocol.moc:77
#27 0x00007fb5625cf1f2 in QMetaObject::activate (sender=0x2682550, from_signal_index=<value optimized out>, to_signal_index=4, argv=0x2be0cd0) at kernel/qobject.cpp:3069
#28 0x00007fb559e8d182 in Plasma::DataEngine::sourceAdded (this=0x7fff6aacbe20, _t1=<value optimized out>) at /build/buildd/kde4libs-4.2.96/obj-x86_64-linux-gnu/plasma/dataengine.moc:176
#29 0x00007fb559e8e381 in Plasma::DataEngine::setData (this=0x2682550, source=@0x7fff6aacd6c0, data=@0x7fff6aacd680) at /build/buildd/kde4libs-4.2.96/plasma/dataengine.cpp:210
#30 0x00007fb53fd67f5c in NotificationsEngine::Notify (this=0x2682550, app_name=<value optimized out>, replaces_id=<value optimized out>, event_id=@0x1862e90, app_icon=@0x7fff6aacd5e0, 
    summary=@0x2b4e220, body=@0x290ad20, actions=@0x2ac05d0, hints=@0x171ca60, timeout=0) at /build/buildd/kdebase-workspace-4.2.96/plasma/dataengines/notifications/notificationsengine.cpp:92
#31 0x00007fb53fd6a04f in VisualNotificationsAdaptor::qt_metacall (this=0x2688270, _c=QMetaObject::InvokeMetaMethod, _id=3, _a=0x7fff6aacda20)
    at /build/buildd/kdebase-workspace-4.2.96/obj-x86_64-linux-gnu/plasma/dataengines/notifications/visualnotificationsadaptor.cpp:45
#32 0x00007fb560829f83 in QDBusConnectionPrivate::deliverCall (this=0x1134b90, object=0x2688270, msg=@0x2bf1200, metaTypes=@0x2b33d50, slotIdx=7) at qdbusintegrator.cpp:891
#33 0x00007fb56082b2a8 in QDBusConnectionPrivate::activateCall (this=0x1134b90, object=0x2688270, flags=273, msg=@0x2bf1200) at qdbusintegrator.cpp:803
#34 0x00007fb56082b8d1 in QDBusConnectionPrivate::activateObject (this=0x1134b90, node=@0x2bf11d8, msg=@0x2bf1200, pathStartPos=<value optimized out>) at qdbusintegrator.cpp:1352
#35 0x00007fb56082bbe8 in QDBusActivateObjectEvent::placeMetaCall (this=0x2bf1190) at qdbusintegrator.cpp:1469
#36 0x00007fb5625c9848 in QObject::event (this=0x2682550, e=0x2bf1190) at kernel/qobject.cpp:1118
#37 0x00007fb55fb4278d in QApplicationPrivate::notify_helper (this=0x113ca60, receiver=0x2682550, e=0x2bf1190) at kernel/qapplication.cpp:4084
#38 0x00007fb55fb4a97a in QApplication::notify (this=0x1133460, receiver=0x2682550, e=0x2bf1190) at kernel/qapplication.cpp:4049
#39 0x00007fb560c8563b in KApplication::notify (this=0x1133460, receiver=0x2682550, event=0x2bf1190) at /build/buildd/kde4libs-4.2.96/kdeui/kernel/kapplication.cpp:302
#40 0x00007fb5625b975c in QCoreApplication::notifyInternal (this=0x1133460, receiver=0x2682550, event=0x2bf1190) at kernel/qcoreapplication.cpp:602
#41 0x00007fb5625ba3ca in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x10af320) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#42 0x00007fb5625e31e3 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#43 0x00007fb55e5a020a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#44 0x00007fb55e5a38e0 in ?? () from /usr/lib/libglib-2.0.so.0
#45 0x00007fb55e5a3a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#46 0x00007fb5625e2e6f in QEventDispatcherGlib::processEvents (this=0x113c0c0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#47 0x00007fb55fbdabef in QGuiEventDispatcherGlib::processEvents (this=0x7fff6aacbe20, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#48 0x00007fb5625b8002 in QEventLoop::processEvents (this=<value optimized out>, flags={i = 1789715952}) at kernel/qeventloop.cpp:149
#49 0x00007fb5625b83cd in QEventLoop::exec (this=0x7fff6aace630, flags={i = 1789716032}) at kernel/qeventloop.cpp:200
#50 0x00007fb5625ba694 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#51 0x00007fb5578866bb in kdemain (argc=1, argv=0x10ebd60) at /build/buildd/kdebase-workspace-4.2.96/plasma/shells/desktop/main.cpp:50
#52 0x0000000000407215 in launch (argc=1, _name=0x10ee558 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x10ee578 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a3c9 "0") at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:676
#53 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1168
#54 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1361
#55 0x0000000000408b26 in main (argc=2, argv=0x7fff6aacf4d8, envp=0x7fff6aacf4f0) at /build/buildd/kde4libs-4.2.96/kinit/kinit.cpp:1788

Reported using DrKonqi