Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.3 (4.6.3)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
Hi, I just tried to restore firefox window from minimalization using panel - they were two firefox windows grouped into one app button on the panel.
- Custom settings of the application:
I use latest smooth-tasks with launchers in it's latest version as it is really more usable than the original one.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Shell plochy Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7fb494c8f7a0 (LWP 1797))]

Thread 9 (Thread 0x7fb47881c700 (LWP 1801)):
#0  0x00007fff8f7ff861 in clock_gettime ()
#1  0x00007fb48921c146 in clock_gettime (clock_id=1, tp=0x7fb47881bb10) at ../sysdeps/unix/clock_gettime.c:116
#2  0x00007fb4916d7304 in do_gettime () at tools/qelapsedtimer_unix.cpp:123
#3  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#4  0x00007fb491798e3d in QTimerInfoList::updateCurrentTime (this=0x7fb474002060) at kernel/qeventdispatcher_unix.cpp:339
#5  0x00007fb4917991a5 in QTimerInfoList::timerWait (this=0x7fb474002060, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#6  0x00007fb491797c2c in timerSourcePrepareHelper (src=<value optimized out>, timeout=0x7fb47881bc2c) at kernel/qeventdispatcher_glib.cpp:136
#7  0x00007fb491797cd5 in timerSourcePrepare (source=<value optimized out>, timeout=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#8  0x00007fb488f6b0a2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#9  0x00007fb488f6bf9d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#10 0x00007fb488f6c639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#11 0x00007fb491798446 in QEventDispatcherGlib::processEvents (this=0x2b1d3a0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#12 0x00007fb49176c882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#13 0x00007fb49176cabc in QEventLoop::exec (this=0x7fb47881bdb0, flags=...) at kernel/qeventloop.cpp:201
#14 0x00007fb491683924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#15 0x00007fb49174ec2f in QInotifyFileSystemWatcherEngine::run (this=0x2b0a1b0) at io/qfilesystemwatcher_inotify.cpp:248
#16 0x00007fb491686175 in QThreadPrivate::start (arg=0x2b0a1b0) at thread/qthread_unix.cpp:320
#17 0x00007fb48986fd8c in start_thread (arg=0x7fb47881c700) at pthread_create.c:304
#18 0x00007fb49459804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#19 0x0000000000000000 in ?? ()

Thread 8 (Thread 0x7fb46c4d6700 (LWP 1803)):
#0  0x00007fb49458af03 in __poll (fds=<value optimized out>, nfds=<value optimized out>, timeout=<value optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007fb488f6c104 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb488f6c639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb491798446 in QEventDispatcherGlib::processEvents (this=0x2bba7b0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007fb49176c882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007fb49176cabc in QEventLoop::exec (this=0x7fb46c4d5db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007fb491683924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007fb49174ec2f in QInotifyFileSystemWatcherEngine::run (this=0x2bf04c0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007fb491686175 in QThreadPrivate::start (arg=0x2bf04c0) at thread/qthread_unix.cpp:320
#9  0x00007fb48986fd8c in start_thread (arg=0x7fb46c4d6700) at pthread_create.c:304
#10 0x00007fb49459804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 7 (Thread 0x7fb469ca8700 (LWP 1808)):
#0  0x00007fb46ad705ba in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#1  0x00007fb488f6b0a2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007fb488f6bf9d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007fb488f6c9f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007fb46adbfc44 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007fb488f933e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007fb48986fd8c in start_thread (arg=0x7fb469ca8700) at pthread_create.c:304
#7  0x00007fb49459804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 6 (Thread 0x7fb473dbc700 (LWP 6382)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fb49168682b in wait (this=<value optimized out>, mutex=0x4b52720, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x4b52720, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fb4681e84ea in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#4  0x00007fb468e6c630 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#5  0x00007fb468e6e27d in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#6  0x00007fb468ded192 in ?? () from /usr/lib/libpython2.7.so.1.0
#7  0x00007fb468dc0a53 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#8  0x00007fb468dd38ff in ?? () from /usr/lib/libpython2.7.so.1.0
#9  0x00007fb468dc0a53 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#10 0x00007fb468e66627 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.7.so.1.0
#11 0x00007fb467f2ead2 in ?? () from /usr/lib/pymodules/python2.7/sip.so
#12 0x00007fb4681ce4c5 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#13 0x00007fb468203085 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#14 0x00007fb491686175 in QThreadPrivate::start (arg=0x57b9160) at thread/qthread_unix.cpp:320
#15 0x00007fb48986fd8c in start_thread (arg=0x7fb473dbc700) at pthread_create.c:304
#16 0x00007fb49459804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#17 0x0000000000000000 in ?? ()

Thread 5 (Thread 0x7fb46a4a9700 (LWP 6383)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fb48fe24832 in ?? () from /usr/lib/libQtWebKit.so.4
#2  0x00007fb48986fd8c in start_thread (arg=0x7fb46a4a9700) at pthread_create.c:304
#3  0x00007fb49459804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#4  0x0000000000000000 in ?? ()

Thread 4 (Thread 0x7fb4567c1700 (LWP 6497)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fb49168682b in wait (this=<value optimized out>, mutex=0x5936550, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x5936550, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fb4681e84ea in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#4  0x00007fb468e6c630 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#5  0x00007fb468e6e27d in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#6  0x00007fb468ded192 in ?? () from /usr/lib/libpython2.7.so.1.0
#7  0x00007fb468dc0a53 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#8  0x00007fb468dd38ff in ?? () from /usr/lib/libpython2.7.so.1.0
#9  0x00007fb468dc0a53 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#10 0x00007fb468e66627 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.7.so.1.0
#11 0x00007fb467f2ead2 in ?? () from /usr/lib/pymodules/python2.7/sip.so
#12 0x00007fb4681ce4c5 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#13 0x00007fb468203085 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#14 0x00007fb491686175 in QThreadPrivate::start (arg=0x4af1ac0) at thread/qthread_unix.cpp:320
#15 0x00007fb48986fd8c in start_thread (arg=0x7fb4567c1700) at pthread_create.c:304
#16 0x00007fb49459804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#17 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7fb460f69700 (LWP 6506)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fb49168682b in wait (this=<value optimized out>, mutex=0x538b250, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x538b250, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fb4681e84ea in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#4  0x00007fb468e6c630 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#5  0x00007fb468e6e27d in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#6  0x00007fb468ded192 in ?? () from /usr/lib/libpython2.7.so.1.0
#7  0x00007fb468dc0a53 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#8  0x00007fb468dd38ff in ?? () from /usr/lib/libpython2.7.so.1.0
#9  0x00007fb468dc0a53 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#10 0x00007fb468e66627 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.7.so.1.0
#11 0x00007fb467f2ead2 in ?? () from /usr/lib/pymodules/python2.7/sip.so
#12 0x00007fb4681ce4c5 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#13 0x00007fb468203085 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#14 0x00007fb491686175 in QThreadPrivate::start (arg=0x59c86b0) at thread/qthread_unix.cpp:320
#15 0x00007fb48986fd8c in start_thread (arg=0x7fb460f69700) at pthread_create.c:304
#16 0x00007fb49459804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#17 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7fb460267700 (LWP 6508)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007fb49168682b in wait (this=<value optimized out>, mutex=0x5a08f00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:88
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x5a08f00, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:160
#3  0x00007fb4681e84ea in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#4  0x00007fb468e6c630 in PyEval_EvalFrameEx () from /usr/lib/libpython2.7.so.1.0
#5  0x00007fb468e6e27d in PyEval_EvalCodeEx () from /usr/lib/libpython2.7.so.1.0
#6  0x00007fb468ded192 in ?? () from /usr/lib/libpython2.7.so.1.0
#7  0x00007fb468dc0a53 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#8  0x00007fb468dd38ff in ?? () from /usr/lib/libpython2.7.so.1.0
#9  0x00007fb468dc0a53 in PyObject_Call () from /usr/lib/libpython2.7.so.1.0
#10 0x00007fb468e66627 in PyEval_CallObjectWithKeywords () from /usr/lib/libpython2.7.so.1.0
#11 0x00007fb467f2ead2 in ?? () from /usr/lib/pymodules/python2.7/sip.so
#12 0x00007fb4681ce4c5 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#13 0x00007fb468203085 in ?? () from /usr/lib/pymodules/python2.7/PyQt4/QtCore.so
#14 0x00007fb491686175 in QThreadPrivate::start (arg=0x5aab790) at thread/qthread_unix.cpp:320
#15 0x00007fb48986fd8c in start_thread (arg=0x7fb460267700) at pthread_create.c:304
#16 0x00007fb49459804d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#17 0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7fb494c8f7a0 (LWP 1797)):
[KCrash Handler]
#6  0x00007fb47c014d27 in TaskManager::TaskItem::task() const () from /usr/lib/libtaskmanager.so.4
#7  0x00007fb47b73084a in SmoothTasks::Task::task (this=<value optimized out>) at /home/honza/Stažené/panzi-smooth-tasks-2426b843fd23/applet/SmoothTasks/Task.cpp:191
#8  0x00007fb47b73fb74 in SmoothTasks::WindowPreview::leftClickTask (this=0x481a4e0) at /home/honza/Stažené/panzi-smooth-tasks-2426b843fd23/applet/SmoothTasks/WindowPreview.cpp:331
#9  0x00007fb47b740505 in SmoothTasks::WindowPreview::mouseReleaseEvent (this=0x481a4e0, event=0x7fff8f6d6cc0) at /home/honza/Stažené/panzi-smooth-tasks-2426b843fd23/applet/SmoothTasks/WindowPreview.cpp:502
#10 0x00007fb490b7fcb8 in QWidget::event (this=0x481a4e0, event=0x7fff8f6d6cc0) at kernel/qwidget.cpp:8259
#11 0x00007fb490b2e9e4 in QApplicationPrivate::notify_helper (this=0x2578fd0, receiver=0x481a4e0, e=0x7fff8f6d6cc0) at kernel/qapplication.cpp:4462
#12 0x00007fb490b33db3 in QApplication::notify (this=<value optimized out>, receiver=0x481a4e0, e=0x7fff8f6d6cc0) at kernel/qapplication.cpp:4023
#13 0x00007fb492426196 in KApplication::notify (this=0x255b210, receiver=0x481a4e0, event=0x7fff8f6d6cc0) at ../../kdeui/kernel/kapplication.cpp:311
#14 0x00007fb49176d49c in QCoreApplication::notifyInternal (this=0x255b210, receiver=0x481a4e0, event=0x7fff8f6d6cc0) at kernel/qcoreapplication.cpp:731
#15 0x00007fb490b2fa0d in sendEvent (receiver=0x481a4e0, event=0x7fff8f6d6cc0, alienWidget=0x481a4e0, nativeWidget=0x26d8dd0, buttonDown=0x7fb49160f218, lastMouseReceiver=..., spontaneous=true) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#16 QApplicationPrivate::sendMouseEvent (receiver=0x481a4e0, event=0x7fff8f6d6cc0, alienWidget=0x481a4e0, nativeWidget=0x26d8dd0, buttonDown=0x7fb49160f218, lastMouseReceiver=..., spontaneous=true) at kernel/qapplication.cpp:3122
#17 0x00007fb490baf600 in QETWidget::translateMouseEvent (this=0x26d8dd0, event=<value optimized out>) at kernel/qapplication_x11.cpp:4556
#18 0x00007fb490bae04a in QApplication::x11ProcessEvent (this=0x255b210, event=0x7fff8f6d7610) at kernel/qapplication_x11.cpp:3678
#19 0x00007fb490bd6162 in x11EventSourceDispatch (s=0x2577f50, callback=0, user_data=0x0) at kernel/qguieventdispatcher_glib.cpp:146
#20 0x00007fb488f6bbcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#21 0x00007fb488f6c3a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#22 0x00007fb488f6c639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007fb4917983ef in QEventDispatcherGlib::processEvents (this=0x24d5340, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#24 0x00007fb490bd5dfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#25 0x00007fb49176c882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#26 0x00007fb49176cabc in QEventLoop::exec (this=0x7fff8f6d7910, flags=...) at kernel/qeventloop.cpp:201
#27 0x00007fb491770ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#28 0x00007fb494884b2c in kdemain () from /usr/lib/kde4/libkdeinit/libkdeinit4_plasma-desktop.so
#29 0x00007fb4944d0eff in __libc_start_main (main=0x400740 <_start+256>, argc=1, ubp_av=0x7fff8f6d7d18, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=) at libc-start.c:226

Reported using DrKonqi