Version:           2.0.2 (using 4.2.2 (KDE 4.2.2), Kubuntu packages)
OS:                Linux (x86_64) release 2.6.28-11-generic

After moving quite a number of tracks to the playlist and selecting "do not show under various artists", amarok2 aborted with the following backtrace:

Anwendung: Amarok (amarok), Signal SIGABRT
0x00007ff0b3573d21 in nanosleep () from /lib/libc.so.6
[Current thread is 0 (LWP 19484)]

Thread 9 (Thread 0x7ff09ffc0950 (LWP 19486)):
#0  pthread_cond_timedwait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_timedwait.S:217
#1  0x00007ff0a4ed3f91 in ?? () from /usr/lib/libxine.so.1
#2  0x00007ff0b5dbd3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#3  0x00007ff0b35b1fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7ff09ef50950 (LWP 19487)):
#0  0xffffffffff6001bb in ?? ()
#1  0x00007ff09ef4fd10 in ?? ()
#2  0x00007fffbf1ff5fc in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
Current language:  auto; currently asm

Thread 7 (Thread 0x7ff09e510950 (LWP 19490)):
#0  0x00007ff0b35a8496 in *__GI___poll (fds=0x7ff09e50ff60, nfds=1, timeout=333) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007ff09e54a969 in ?? () from /usr/lib/xine/plugins/1.26/xineplug_ao_out_alsa.so
#2  0x00007ff0b5dbd3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#3  0x00007ff0b35b1fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7ff09dd0f950 (LWP 19491)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007ff0a4ee5353 in ?? () from /usr/lib/libxine.so.1
#2  0x00007ff0b5dbd3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#3  0x00007ff0b35b1fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()
Current language:  auto; currently c

Thread 5 (Thread 0x7ff09c9d3950 (LWP 19493)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007ff0b4055939 in QWaitCondition::wait (this=0x242ce58, mutex=0x2498190, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007ff0b08ca5e4 in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007ff0b08ccd93 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007ff0b08ccdac in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007ff0b08ccdac in ?? () from /usr/lib/libthreadweaver.so.4
#6  0x00007ff0b08ccdac in ?? () from /usr/lib/libthreadweaver.so.4
#7  0x00007ff0b08cb30f in ?? () from /usr/lib/libthreadweaver.so.4
#8  0x00007ff0b08cb769 in ThreadWeaver::Thread::run () from /usr/lib/libthreadweaver.so.4
#9  0x00007ff0b4054952 in QThreadPrivate::start (arg=0x2407e40) at thread/qthread_unix.cpp:189
#10 0x00007ff0b5dbd3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#11 0x00007ff0b35b1fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()
Current language:  auto; currently asm

Thread 4 (Thread 0x7ff08ddee950 (LWP 19495)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007ff0b4055939 in QWaitCondition::wait (this=0x242ce58, mutex=0x2498190, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007ff0b08ca5e4 in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007ff0b08ccd93 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007ff0b08cb30f in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007ff0b08cb769 in ThreadWeaver::Thread::run () from /usr/lib/libthreadweaver.so.4
#6  0x00007ff0b4054952 in QThreadPrivate::start (arg=0x243d980) at thread/qthread_unix.cpp:189
#7  0x00007ff0b5dbd3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#8  0x00007ff0b35b1fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#9  0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7ff08d5ed950 (LWP 19496)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007ff0b4055939 in QWaitCondition::wait (this=0x242ce58, mutex=0x2498190, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007ff0b08ca5e4 in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007ff0b08ccd93 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007ff0b08ccdac in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007ff0b08ccdac in ?? () from /usr/lib/libthreadweaver.so.4
#6  0x00007ff0b08ccdac in ?? () from /usr/lib/libthreadweaver.so.4
#7  0x00007ff0b08ccdac in ?? () from /usr/lib/libthreadweaver.so.4
#8  0x00007ff0b08ccdac in ?? () from /usr/lib/libthreadweaver.so.4
#9  0x00007ff0b08ccdac in ?? () from /usr/lib/libthreadweaver.so.4
#10 0x00007ff0b08ccdac in ?? () from /usr/lib/libthreadweaver.so.4
#11 0x00007ff0b08cb30f in ?? () from /usr/lib/libthreadweaver.so.4
#12 0x00007ff0b08cb769 in ThreadWeaver::Thread::run () from /usr/lib/libthreadweaver.so.4
#13 0x00007ff0b4054952 in QThreadPrivate::start (arg=0x26ef5c0) at thread/qthread_unix.cpp:189
#14 0x00007ff0b5dbd3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#15 0x00007ff0b35b1fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#16 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7ff08352f950 (LWP 19497)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007ff0b4055939 in QWaitCondition::wait (this=0x242ce58, mutex=0x2498190, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  0x00007ff0b08ca5e4 in ?? () from /usr/lib/libthreadweaver.so.4
#3  0x00007ff0b08ccd93 in ?? () from /usr/lib/libthreadweaver.so.4
#4  0x00007ff0b08ccdac in ?? () from /usr/lib/libthreadweaver.so.4
#5  0x00007ff0b08cb30f in ?? () from /usr/lib/libthreadweaver.so.4
#6  0x00007ff0b08cb769 in ThreadWeaver::Thread::run () from /usr/lib/libthreadweaver.so.4
#7  0x00007ff0b4054952 in QThreadPrivate::start (arg=0x7ff09834e660) at thread/qthread_unix.cpp:189
#8  0x00007ff0b5dbd3ba in start_thread (arg=<value optimized out>) at pthread_create.c:297
#9  0x00007ff0b35b1fcd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#10 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7ff0b6f09790 (LWP 19484)):
[KCrash Handler]
#5  0x00007ff0b34fefb5 in *__GI_raise (sig=<value optimized out>) at ../nptl/sysdeps/unix/sysv/linux/raise.c:64
#6  0x00007ff0b3500bc3 in *__GI_abort () at abort.c:88
#7  0x00007ff0b404c885 in qt_message_output (msgType=QtFatalMsg, buf=<value optimized out>) at global/qglobal.cpp:2006
#8  0x00007ff0b404c9cb in qFatal (msg=<value optimized out>) at global/qglobal.cpp:2201
#9  0x00007ff09ca324d6 in ?? () from /usr/lib/kde4/libamarok_collection-sqlcollection.so
#10 0x00007ff09ca32ace in ?? () from /usr/lib/kde4/libamarok_collection-sqlcollection.so
#11 0x00007ff0b41531f2 in QMetaObject::activate (sender=0x46ef670, from_signal_index=<value optimized out>, to_signal_index=6, argv=0xffffffffffffffff) at kernel/qobject.cpp:3069
#12 0x00007ff0b4ce0897 in QAction::triggered (this=0x4c1c, _t1=false) at .moc/release-shared/moc_qaction.cpp:236
#13 0x00007ff0b4ce1d10 in QAction::activate (this=0x46ef670, event=<value optimized out>) at kernel/qaction.cpp:1160
#14 0x00007ff0b510fd1c in QMenuPrivate::activateCausedStack (this=0x4973eb0, causedStack=@0x7fffbf051eb0, action=0x46ef670, action_e=QAction::Trigger, self=255) at widgets/qmenu.cpp:962
#15 0x00007ff0b5115cee in QMenuPrivate::activateAction (this=0x4973eb0, action=0x46ef670, action_e=QAction::Trigger, self=true) at widgets/qmenu.cpp:1058
#16 0x00007ff0b6b1ab71 in KMenu::mouseReleaseEvent () from /usr/lib/libkdeui.so.5
#17 0x00007ff0b4d3797f in QWidget::event (this=0x50646f0, event=0x7fffbf052850) at kernel/qwidget.cpp:7516
#18 0x00007ff0b51184ab in QMenu::event (this=0x50646f0, e=0x7fffbf052850) at widgets/qmenu.cpp:2351
#19 0x00007ff0b4ce683d in QApplicationPrivate::notify_helper (this=0x1d56d60, receiver=0x50646f0, e=0x7fffbf052850) at kernel/qapplication.cpp:4084
#20 0x00007ff0b4cef18a in QApplication::notify (this=<value optimized out>, receiver=0x50646f0, e=0x7fffbf052850) at kernel/qapplication.cpp:3786
#21 0x00007ff0b6a4926b in KApplication::notify () from /usr/lib/libkdeui.so.5
#22 0x00007ff0b413d75c in QCoreApplication::notifyInternal (this=0x7fffbf055720, receiver=0x50646f0, event=0x7fffbf052850) at kernel/qcoreapplication.cpp:602
#23 0x00007ff0b4cee3d8 in QApplicationPrivate::sendMouseEvent (receiver=0x50646f0, event=0x7fffbf052850, alienWidget=0x0, nativeWidget=0x50646f0, buttonDown=<value optimized out>, 
    lastMouseReceiver=@0x7ff0b574aeb0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:216
#24 0x00007ff0b4d58084 in QETWidget::translateMouseEvent (this=0x50646f0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4359
#25 0x00007ff0b4d56b38 in QApplication::x11ProcessEvent (this=0x7fffbf055720, event=0x7fffbf053390) at kernel/qapplication_x11.cpp:3543
#26 0x00007ff0b4d7f514 in x11EventSourceDispatch (s=0x1d62760, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#27 0x00007ff0ac43d20a in IA__g_main_context_dispatch (context=0x1d61230) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#28 0x00007ff0ac4408e0 in g_main_context_iterate (context=0x1d61230, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#29 0x00007ff0ac440a7c in IA__g_main_context_iteration (context=0x1d61230, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#30 0x00007ff0b4166e6f in QEventDispatcherGlib::processEvents (this=0x1d2d010, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#31 0x00007ff0b4d7ec9f in QGuiEventDispatcherGlib::processEvents (this=0x4c1c, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#32 0x00007ff0b413c002 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1090177408}) at kernel/qeventloop.cpp:149
#33 0x00007ff0b413c3cd in QEventLoop::exec (this=0x7fffbf0536c0, flags={i = -1090177312}) at kernel/qeventloop.cpp:200
#34 0x00007ff0b5118305 in QMenu::exec (this=<value optimized out>, p=@0x7fffbf054850, action=0x0) at widgets/qmenu.cpp:1991
#35 0x00007ff0b6377347 in ?? () from /usr/lib/libamaroklib.so.1
#36 0x00007ff0b637de04 in ?? () from /usr/lib/libamaroklib.so.1
#37 0x00007ff0b4d37e54 in QWidget::event (this=0x20c5360, event=0x7fffbf054830) at kernel/qwidget.cpp:7675
#38 0x00007ff0b50d16eb in QFrame::event (this=0x20c5360, e=0x7fffbf054830) at widgets/qframe.cpp:559
#39 0x00007ff0b520659d in QAbstractItemView::viewportEvent (this=0x20c5360, event=0x7fffbf054830) at itemviews/qabstractitemview.cpp:1466
#40 0x00007ff0b413ca68 in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0x205eeb0, event=0x7fffbf054830) at kernel/qcoreapplication.cpp:718
#41 0x00007ff0b4ce680c in QApplicationPrivate::notify_helper (this=0x1d56d60, receiver=0x205eeb0, e=0x7fffbf054830) at kernel/qapplication.cpp:4080
#42 0x00007ff0b4ceeeca in QApplication::notify (this=<value optimized out>, receiver=0x205eeb0, e=0x7fffbf054830) at kernel/qapplication.cpp:3873
#43 0x00007ff0b6a4926b in KApplication::notify () from /usr/lib/libkdeui.so.5
#44 0x00007ff0b413d75c in QCoreApplication::notifyInternal (this=0x7fffbf055720, receiver=0x205eeb0, event=0x7fffbf054830) at kernel/qcoreapplication.cpp:602
#45 0x00007ff0b4d5850a in QETWidget::translateMouseEvent (this=0x1d55590, event=<value optimized out>) at kernel/qapplication_x11.cpp:4431
#46 0x00007ff0b4d56b38 in QApplication::x11ProcessEvent (this=0x7fffbf055720, event=0x7fffbf0553a0) at kernel/qapplication_x11.cpp:3543
#47 0x00007ff0b4d7f514 in x11EventSourceDispatch (s=0x1d62760, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#48 0x00007ff0ac43d20a in IA__g_main_context_dispatch (context=0x1d61230) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:1814
#49 0x00007ff0ac4408e0 in g_main_context_iterate (context=0x1d61230, block=1, dispatch=1, self=<value optimized out>) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2448
#50 0x00007ff0ac440a7c in IA__g_main_context_iteration (context=0x1d61230, may_block=1) at /build/buildd/glib2.0-2.20.1/glib/gmain.c:2511
#51 0x00007ff0b4166e6f in QEventDispatcherGlib::processEvents (this=0x1d2d010, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:323
#52 0x00007ff0b4d7ec9f in QGuiEventDispatcherGlib::processEvents (this=0x4c1c, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#53 0x00007ff0b413c002 in QEventLoop::processEvents (this=<value optimized out>, flags={i = -1090169200}) at kernel/qeventloop.cpp:149
#54 0x00007ff0b413c3cd in QEventLoop::exec (this=0x7fffbf0556d0, flags={i = -1090169120}) at kernel/qeventloop.cpp:200
#55 0x00007ff0b413e694 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:880
#56 0x0000000000533127 in _start ()
#0  0x00007ff0b3573d21 in nanosleep () from /lib/libc.so.6
Current language:  auto; currently c