Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.1 (KDE 4.3.1)
Qt Version: 4.5.2
Operating System: Linux 2.6.28-15-generic x86_64
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I got a notification asking me to restart Amarok. I tried dragging it up, and got this crash.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 0 (LWP 6315)]

Thread 2 (Thread 0x7fe9ba415950 (LWP 6316)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007fe9da08cd19 in QWaitCondition::wait (this=0x1dde870, mutex=0x1dde868, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007fe9d8f1281c in QHostInfoAgent::run (this=0x1dde850) at kernel/qhostinfo.cpp:260
#3  0x00007fe9da08bd35 in QThreadPrivate::start (arg=0x1dde850) at thread/qthread_unix.cpp:188
#4  0x00007fe9d5f803ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#5  0x00007fe9d6b64fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#6  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fe9da650750 (LWP 6315)):
[KCrash Handler]
#5  0x00007fe9d1acedd4 in Plasma::ExtenderItem::group (this=0x2e4e490) at /build/buildd/kde4libs-4.3.1/plasma/extenderitem.cpp:330
#6  0x00007fe9d1acd598 in Plasma::ExtenderGroup::items (this=0x1eab2d0) at /build/buildd/kde4libs-4.3.1/plasma/extendergroup.cpp:92
#7  0x00007fe9bc19418f in SystemTray::ExtenderTaskBusyWidget::updateTask (this=0x1f19f10) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/systemtray/core/extendertask.cpp:155
#8  0x00007fe9bc194b8d in SystemTray::ExtenderTaskBusyWidget::qt_metacall (this=0x1f19f10, _c=QMetaObject::InvokeMetaMethod, _id=38880, _a=<value optimized out>)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/plasma/applets/systemtray/extendertask.moc:69
#9  0x00007fe9da18aea2 in QMetaObject::activate (sender=0x196b0f0, from_signal_index=<value optimized out>, to_signal_index=9, argv=0x0) at kernel/qobject.cpp:3113
#10 0x00007fe9bc1952d2 in SystemTray::Manager::notificationRemoved (this=0x2e4e490, _t1=0x2f5cb70)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/plasma/applets/systemtray/manager.moc:160
#11 0x00007fe9bc196377 in SystemTray::Manager::qt_metacall (this=0x196b0f0, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffe2687a30)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/plasma/applets/systemtray/manager.moc:110
#12 0x00007fe9da18aea2 in QMetaObject::activate (sender=0x2f5cb70, from_signal_index=<value optimized out>, to_signal_index=7, argv=0x0) at kernel/qobject.cpp:3113
#13 0x00007fe9bc197427 in SystemTray::Notification::destroyed (this=0x2e4e490, _t1=0x2f5cb70)
    at /build/buildd/kdebase-workspace-4.3.1/obj-x86_64-linux-gnu/plasma/applets/systemtray/notification.moc:101
#14 0x00007fe9bc197e5b in ~Notification (this=0x2e4e490) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/systemtray/core/notification.cpp:63
#15 0x00007fe9bc1a4b71 in ~DBusNotification (this=0x2f5cb70) at /build/buildd/kdebase-workspace-4.3.1/plasma/applets/systemtray/protocols/notifications/dbusnotification.cpp:38
#16 0x00007fe9da1855f5 in QObject::event (this=0x2f5cb70, e=0x1e1db80) at kernel/qobject.cpp:1094
#17 0x00007fe9d773bf4d in QApplicationPrivate::notify_helper (this=0x15c86a0, receiver=0x2f5cb70, e=0x2e55900) at kernel/qapplication.cpp:4056
#18 0x00007fe9d774418a in QApplication::notify (this=0x1589820, receiver=0x2f5cb70, e=0x2e55900) at kernel/qapplication.cpp:4021
#19 0x00007fe9d884edeb in KApplication::notify (this=0x1589820, receiver=0x2f5cb70, event=0x2e55900) at /build/buildd/kde4libs-4.3.1/kdeui/kernel/kapplication.cpp:302
#20 0x00007fe9da1756ac in QCoreApplication::notifyInternal (this=0x1589820, receiver=0x2f5cb70, event=0x2e55900) at kernel/qcoreapplication.cpp:610
#21 0x00007fe9da17631a in QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x153c320) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#22 0x00007fe9da19ee03 in postEventSourceDispatch (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#23 0x00007fe9d61cf20a in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#24 0x00007fe9d61d28e0 in ?? () from /usr/lib/libglib-2.0.so.0
#25 0x00007fe9d61d2a7c in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#26 0x00007fe9da19ea8f in QEventDispatcherGlib::processEvents (this=0x15c81d0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:327
#27 0x00007fe9d77d4bdf in QGuiEventDispatcherGlib::processEvents (this=0x2e4e490, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#28 0x00007fe9da173f42 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -496467168}) at kernel/qeventloop.cpp:149
#29 0x00007fe9da174314 in QEventLoop::exec (this=0x7fffe2688360, flags={i = -496467088}) at kernel/qeventloop.cpp:201
#30 0x00007fe9da1765e4 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#31 0x00007fe9ce0983eb in kdemain (argc=1, argv=0x153c9b0) at /build/buildd/kdebase-workspace-4.3.1/plasma/shells/desktop/main.cpp:50
#32 0x0000000000407215 in launch (argc=1, _name=0x157cd48 "/usr/bin/plasma-desktop", args=<value optimized out>, cwd=0x0, envc=0, envs=0x157cd68 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x40a3a1 "0") at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:677
#33 0x0000000000407a38 in handle_launcher_request (sock=7, who=<value optimized out>) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1169
#34 0x0000000000407fe5 in handle_requests (waitForPid=0) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1362
#35 0x0000000000408b26 in main (argc=2, argv=0x7fffe2689208, envp=0x7fffe2689220) at /build/buildd/kde4libs-4.3.1/kinit/kinit.cpp:1793

This bug may be a duplicate of or related to bug 206240

Reported using DrKonqi