Application that crashed: plasma-desktop
Version of the application: 0.3
KDE Version: 4.2.85 (KDE 4.2.85 (KDE 4.3 Beta1))
Qt Version: 4.5.1
Operating System: Linux 2.6.28-12-generic i686
Distribution: Ubuntu 9.04

What I was doing when the application crashed:
I was starting an application (Netbeans) and I grabbed the opening window's icon on desktop switcher and moved it to another desktop (i.e. dropped on another desktop on the switcher applet). Then plasma crashed.

 -- Backtrace:
Application: Plasma Workspace (plasma-desktop), signal: Segmentation fault
[Current thread is 0 (LWP 6812)]

Thread 4 (Thread 0xa93beb90 (LWP 6815)):
#0  0xb8073430 in __kernel_vsyscall ()
#1  0xb51970e5 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb63902ed in pthread_cond_wait () from /lib/tls/i686/cmov/libc.so.6
#3  0xb65745b2 in QWaitCondition::wait (this=0x8d63760, mutex=0x8d6375c, time=4294967295) at thread/qwaitcondition_unix.cpp:87
#4  0xb79d2ae2 in QHostInfoAgent::run (this=0x8d63750) at kernel/qhostinfo.cpp:260
#5  0xb657356e in QThreadPrivate::start (arg=0x8d63750) at thread/qthread_unix.cpp:189
#6  0xb51934ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#7  0xb638149e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 3 (Thread 0xa40d7b90 (LWP 7342)):
#0  0xb8073430 in __kernel_vsyscall ()
#1  0xb5197412 in pthread_cond_timedwait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0xb6390344 in pthread_cond_timedwait () from /lib/tls/i686/cmov/libc.so.6
#3  0xa4f56ae3 in metronom_sync_loop (this=0x98aa220) at metronom.c:870
#4  0xb51934ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0xb638149e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa380bb90 (LWP 7343)):
#0  0xb63904c0 in pthread_mutex_unlock () from /lib/tls/i686/cmov/libc.so.6
#1  0xb4f935ac in IA__g_main_context_acquire (context=0x981fc80) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1915
#2  0xb4f94cac in g_main_context_iterate (context=0x981fc80, block=1, dispatch=1, self=0x8d263a0) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2389
#3  0xb4f95268 in IA__g_main_context_iteration (context=0x981fc80, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#4  0xb66931f7 in QEventDispatcherGlib::processEvents (this=0x9015ef0, flags={i = -1551846824}) at kernel/qeventdispatcher_glib.cpp:326
#5  0xb6665dda in QEventLoop::processEvents (this=0xa380b2d0, flags={i = -1551846760}) at kernel/qeventloop.cpp:149
#6  0xb666621a in QEventLoop::exec (this=0xa380b2d0, flags={i = -1551846696}) at kernel/qeventloop.cpp:200
#7  0xb6570239 in QThread::exec (this=0x97fca18) at thread/qthread.cpp:487
#8  0xa4fa420a in Phonon::Xine::XineThread::run (this=0x97fca18) at /build/buildd/phonon-4.3.1/xine/xinethread.cpp:143
#9  0xb657356e in QThreadPrivate::start (arg=0x97fca18) at thread/qthread_unix.cpp:189
#10 0xb51934ff in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#11 0xb638149e in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb4cc9710 (LWP 6812)):
[KCrash Handler]
#6  TaskManager::Task::window (this=0xa7d8bc0) at /build/buildd/kdebase-workspace-4.2.85/libs/taskmanager/task.cpp:356
#7  0xb6677f0f in QObject::event (this=0xa7d8bc0, e=0x0) at kernel/qobject.cpp:1082
#8  0xb6f7b257 in QGraphicsWidget::event (this=0xa7d8bc0, event=0xbff8f65c) at graphicsview/qgraphicswidget.cpp:1340
#9  0xb68f2bcc in QApplicationPrivate::notify_helper (this=0x8797b68, receiver=0xa7d8bc0, e=0xbff8f65c) at kernel/qapplication.cpp:4057
#10 0xb68faede in QApplication::notify (this=0x8790238, receiver=0xa7d8bc0, e=0xbff8f65c) at kernel/qapplication.cpp:3604
#11 0xb7754c9d in KApplication::notify (this=0x8790238, receiver=0xa7d8bc0, event=0xbff8f65c) at /build/buildd/kde4libs-4.2.85/kdeui/kernel/kapplication.cpp:307
#12 0xb66677ab in QCoreApplication::notifyInternal (this=0x8790238, receiver=0xa7d8bc0, event=0xbff8f65c) at kernel/qcoreapplication.cpp:610
#13 0xb6696b31 in QTimerInfoList::activateTimers (this=0x879a934) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:213
#14 0xb6693280 in timerSourceDispatch (source=0x879a900) at kernel/qeventdispatcher_glib.cpp:164
#15 0xb4f91b88 in IA__g_main_context_dispatch (context=0x879a3e8) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#16 0xb4f950eb in g_main_context_iterate (context=0x879a3e8, block=1, dispatch=1, self=0x87964d0) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#17 0xb4f95268 in IA__g_main_context_iteration (context=0x879a3e8, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#18 0xb66931d8 in QEventDispatcherGlib::processEvents (this=0x8797128, flags={i = -1074202664}) at kernel/qeventdispatcher_glib.cpp:324
#19 0xb6994765 in QGuiEventDispatcherGlib::processEvents (this=0x8797128, flags={i = -1074202616}) at kernel/qguieventdispatcher_glib.cpp:202
#20 0xb6665dda in QEventLoop::processEvents (this=0xbff8f880, flags={i = -1074202552}) at kernel/qeventloop.cpp:149
#21 0xb666621a in QEventLoop::exec (this=0xbff8f880, flags={i = -1074202488}) at kernel/qeventloop.cpp:200
#22 0xb66686c9 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:888
#23 0xb68f2a47 in QApplication::exec () at kernel/qapplication.cpp:3526
#24 0xb8011290 in kdemain (argc=1, argv=0xbff8fa34) at /build/buildd/kdebase-workspace-4.2.85/plasma/shells/desktop/main.cpp:50
#25 0x08048712 in main (argc=0, argv=0x1) at /build/buildd/kdebase-workspace-4.2.85/obj-i486-linux-gnu/plasma/shells/desktop/plasma-desktop_dummy.cpp:3