Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.3.3 (KDE 4.3.3)
Qt Version: 4.5.2
Operating System: Linux 2.6.31-15-generic i686
Distribution: Ubuntu 9.10

What I was doing when the application crashed:
Sometimes, plasma crashes when opening Amarok.
I'm pretty sure this only happens when Amarok is opened for the first time, since whenever I restart the application, Amarok opens up.

Kubuntu 9.10 + backports
Lenovo Thinkpad T500

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb7766700 (LWP 1836))]

Thread 2 (Thread 0xaaeffb70 (LWP 1841)):
#0  0x005bb422 in __kernel_vsyscall ()
#1  0x0093be15 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x00d2378d in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0x00a66e67 in QWaitConditionPrivate::wait (this=0x98eb538, mutex=0x98eb534, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  QWaitCondition::wait (this=0x98eb538, mutex=0x98eb534, time=4294967295) at thread/qwaitcondition_unix.cpp:159
#5  0x090a4922 in QHostInfoAgent::run (this=0x98eb528) at kernel/qhostinfo.cpp:260
#6  0x00a65e32 in QThreadPrivate::start (arg=0x98eb528) at thread/qthread_unix.cpp:188
#7  0x0093780e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#8  0x00d167ee in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb7766700 (LWP 1836)):
[KCrash Handler]
#6  0x014c829c in TaskManager::Task::icon(int, int, bool) () from /usr/lib/libtaskmanager.so.4
#7  0x0788484a in ?? () from /usr/lib/kde4/plasma_applet_daisy.so
#8  0x0788dd13 in ?? () from /usr/lib/kde4/plasma_applet_daisy.so
#9  0x00b6c263 in QMetaObject::activate (sender=0x9586ab0, from_signal_index=13, to_signal_index=13, argv=0xbfc144a4) at kernel/qobject.cpp:3113
#10 0x00b6cec2 in QMetaObject::activate (sender=0x9586ab0, m=0x119d26c, local_signal_index=9, argv=0xbfc144a4) at kernel/qobject.cpp:3187
#11 0x01134179 in KWindowSystem::windowChanged (this=0x9586ab0, _t1=58720292, _t2=0xbfc14504) at ./kwindowsystem.moc:172
#12 0x01137726 in KWindowSystemPrivate::x11Event (this=0x9588dc0, ev=0xbfc15b0c) at ../../kdeui/windowmanagement/kwindowsystem_x11.cpp:180
#13 0x00fe44d6 in KAppX11HackWidget::publicx11Event (this=0x948a7f0, _event=0xbfc15b0c) at ../../kdeui/kernel/kapplication.cpp:911
#14 KApplication::x11EventFilter (this=0x948a7f0, _event=0xbfc15b0c) at ../../kdeui/kernel/kapplication.cpp:961
#15 0x03d5871a in ?? () from /usr/lib/libkdeinit4_plasma-desktop.so
#16 0x05419d70 in qt_x11EventFilter (ev=0xbfc15b0c) at kernel/qapplication_x11.cpp:375
#17 0x0542b375 in QApplication::x11ProcessEvent (this=0x948a7f0, event=0xbfc15b0c) at kernel/qapplication_x11.cpp:3271
#18 0x05459502 in x11EventSourceDispatch (s=0x94b42a8, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#19 0x001a9e78 in g_main_dispatch (context=0x94b3690) at /build/buildd/glib2.0-2.22.2/glib/gmain.c:1960
#20 IA__g_main_context_dispatch (context=0x94b3690) at /build/buildd/glib2.0-2.22.2/glib/gmain.c:2513
#21 0x001ad720 in g_main_context_iterate (context=0x94b3690, block=<value optimized out>, dispatch=1, self=0x94b11a8) at /build/buildd/glib2.0-2.22.2/glib/gmain.c:2591
#22 0x001ad853 in IA__g_main_context_iteration (context=0x94b3690, may_block=1) at /build/buildd/glib2.0-2.22.2/glib/gmain.c:2654
#23 0x00b8102c in QEventDispatcherGlib::processEvents (this=0x94b1490, flags=...) at kernel/qeventdispatcher_glib.cpp:327
#24 0x05458be5 in QGuiEventDispatcherGlib::processEvents (this=0x94b1490, flags=...) at kernel/qguieventdispatcher_glib.cpp:202
#25 0x00b54c79 in QEventLoop::processEvents (this=0xbfc15e04, flags=) at kernel/qeventloop.cpp:149
#26 0x00b550ca in QEventLoop::exec (this=0xbfc15e04, flags=...) at kernel/qeventloop.cpp:201
#27 0x00b5753f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#28 0x053b7dd7 in QApplication::exec () at kernel/qapplication.cpp:3525
#29 0x03d4280d in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#30 0x0804dde1 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x94589a8 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x80511a5 "0") at ../../kinit/kinit.cpp:677
#31 0x0804ea35 in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1169
#32 0x0804eeac in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1362
#33 0x0804fbaf in main (argc=2, argv=0xbfc16664, envp=0xbfc16670) at ../../kinit/kinit.cpp:1793

Reported using DrKonqi