Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.2 (4.7.2)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-13-generic x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:

Tried to drag a task on the taskbar (to re-arrange the order of the tasks.)

Please note that there are lots of problems with the Task Manager in general these days - task icons in the task bar are often not distributed visually as before.)

Thanks!

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fce224137a0 (LWP 3135))]

Thread 5 (Thread 0x7fcdfda3e700 (LWP 3219)):
#0  __pthread_mutex_lock (mutex=0x251b918) at pthread_mutex_lock.c:50
#1  0x00007fce1628c023 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fce1628cdfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fce1628d429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fce1eef3f3e in QEventDispatcherGlib::processEvents (this=0x24a9770, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fce1eec7cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fce1eec7ef7 in QEventLoop::exec (this=0x7fcdfda3ddb0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007fce1eddf27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007fce1eeaacbf in QInotifyFileSystemWatcherEngine::run (this=0x251a690) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007fce1ede1d05 in QThreadPrivate::start (arg=0x251a690) at thread/qthread_unix.cpp:331
#10 0x00007fce16d99efc in start_thread (arg=0x7fcdfda3e700) at pthread_create.c:304
#11 0x00007fce21d0d89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fcdf673f700 (LWP 3312)):
#0  0x00007fce1628c3f5 in g_main_context_query () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007fce1628ce6a in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fce1628d429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fce1eef3f3e in QEventDispatcherGlib::processEvents (this=0x2e54e20, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fce1eec7cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fce1eec7ef7 in QEventLoop::exec (this=0x7fcdf673edb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fce1eddf27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007fce1eeaacbf in QInotifyFileSystemWatcherEngine::run (this=0x2e5f320) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fce1ede1d05 in QThreadPrivate::start (arg=0x2e5f320) at thread/qthread_unix.cpp:331
#9  0x00007fce16d99efc in start_thread (arg=0x7fcdf673f700) at pthread_create.c:304
#10 0x00007fce21d0d89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fcdecdca700 (LWP 25982)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fce1d39bc2c in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#2  0x00007fce1d39bd59 in ?? () from /usr/lib/x86_64-linux-gnu/libQtWebKit.so.4
#3  0x00007fce16d99efc in start_thread (arg=0x7fcdecdca700) at pthread_create.c:304
#4  0x00007fce21d0d89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fcdeed35700 (LWP 25983)):
#0  0x00007fce16d9c03e in __pthread_mutex_lock (mutex=0x9a9b588) at pthread_mutex_lock.c:62
#1  0x00007fce1628c023 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fce1628cdfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fce1628d429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fce1eef3f3e in QEventDispatcherGlib::processEvents (this=0x5352530, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007fce1eec7cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007fce1eec7ef7 in QEventLoop::exec (this=0x7fcdeed34de0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007fce1eddf27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007fce1ede1d05 in QThreadPrivate::start (arg=0x8cafbd0) at thread/qthread_unix.cpp:331
#9  0x00007fce16d99efc in start_thread (arg=0x7fcdeed35700) at pthread_create.c:304
#10 0x00007fce21d0d89d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fce224137a0 (LWP 3135)):
[KCrash Handler]
#6  QCoreApplication::postEvent (receiver=0x9990790, event=0x72b0710, priority=0) at kernel/qcoreapplication.cpp:1188
#7  0x00007fce1e30829a in QX11Data::xdndHandleFinished (this=<optimized out>, xe=0x7fff2f4e43b0, passive=false) at kernel/qdnd_x11.cpp:1254
#8  0x00007fce1e2fa3c3 in QApplication::x11ClientMessage (this=<optimized out>, w=0x3c82070, event=<optimized out>, passive_only=<optimized out>) at kernel/qapplication_x11.cpp:3204
#9  0x00007fce1e2f88fb in QApplication::x11ProcessEvent (this=0x1bfc070, event=0x7fff2f4e43b0) at kernel/qapplication_x11.cpp:3829
#10 0x00007fce1e321412 in x11EventSourceDispatch (s=0x1c22e60, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#11 0x00007fce1628ca5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#12 0x00007fce1628d258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#13 0x00007fce1628d429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#14 0x00007fce1eef3ed6 in QEventDispatcherGlib::processEvents (this=0x1ba5f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#15 0x00007fce1e32107e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#16 0x00007fce1eec7cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#17 0x00007fce1eec7ef7 in QEventLoop::exec (this=0x7fff2f4e4780, flags=...) at kernel/qeventloop.cpp:201
#18 0x00007fce1eecc789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#19 0x00007fce2200c1a3 in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#20 0x00007fce21c4d30d in __libc_start_main (main=0x400640, argc=1, ubp_av=0x7fff2f4e4b68, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff2f4e4b58) at libc-start.c:226
#21 0x0000000000400671 in _start ()

This bug may be a duplicate of or related to bug 283536.

Possible duplicates by query: bug 284582, bug 283656, bug 283536, bug 282224, bug 282110.

Reported using DrKonqi