Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-12-generic i686
Distribution: Ubuntu 11.10

-- Information about the crash:
When you try to minimize Jdownloader a Plasma Crash happens and a JavaEmbeddedFrame error appears.

The crash can be reproduced every time.

-- Backtrace:
Application: Shell de escritorio Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb77a1b20 (LWP 1785))]

Thread 4 (Thread 0xb0596b70 (LWP 1786)):
#0  0x01c31d10 in __GI_clock_gettime (clock_id=1, tp=0xb0596018) at ../sysdeps/unix/clock_gettime.c:116
#1  0x02a4d7d5 in do_gettime (frac=0xb0596010, sec=0xb0596008) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x02b204b6 in QTimerInfoList::updateCurrentTime (this=0xa36d9bc) at kernel/qeventdispatcher_unix.cpp:339
#4  0x02b2080a in QTimerInfoList::timerWait (this=0xa36d9bc, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x02b1f053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xb059611c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x02b1f0ed in timerSourcePrepare (source=0xa36d988, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x027be88c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x027bf637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x027bfc2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x02b1fb37 in QEventDispatcherGlib::processEvents (this=0xa36da20, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x02af01dd in QEventLoop::processEvents (this=0xb05962a0, flags=...) at kernel/qeventloop.cpp:149
#12 0x02af0421 in QEventLoop::exec (this=0xb05962a0, flags=...) at kernel/qeventloop.cpp:201
#13 0x029f390b in QThread::exec (this=0x9e35418) at thread/qthread.cpp:498
#14 0x02ad0e2d in QInotifyFileSystemWatcherEngine::run (this=0x9e35418) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x029f67b3 in QThreadPrivate::start (arg=0x9e35418) at thread/qthread_unix.cpp:331
#16 0x05914d31 in start_thread (arg=0xb0596b70) at pthread_create.c:304
#17 0x003b80ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xafbffb70 (LWP 1787)):
#0  0x003c5f28 in pthread_mutex_unlock (mutex=0xa388bcc) at forward.c:184
#1  0x027be87f in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0x027bf637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x027bfc2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x02b1fb37 in QEventDispatcherGlib::processEvents (this=0xa3867a8, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#5  0x02af01dd in QEventLoop::processEvents (this=0xafbff2a0, flags=...) at kernel/qeventloop.cpp:149
#6  0x02af0421 in QEventLoop::exec (this=0xafbff2a0, flags=...) at kernel/qeventloop.cpp:201
#7  0x029f390b in QThread::exec (this=0xa383408) at thread/qthread.cpp:498
#8  0x02ad0e2d in QInotifyFileSystemWatcherEngine::run (this=0xa383408) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x029f67b3 in QThreadPrivate::start (arg=0xa383408) at thread/qthread_unix.cpp:331
#10 0x05914d31 in start_thread (arg=0xafbffb70) at pthread_create.c:304
#11 0x003b80ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xae3fcb70 (LWP 1793)):
#0  0x05917d44 in __pthread_mutex_unlock_usercnt (mutex=0xa440aec, decr=1) at pthread_mutex_unlock.c:52
#1  0x003c5f54 in pthread_mutex_unlock (mutex=0xa440aec) at forward.c:184
#2  0x027bf877 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x027bff9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x05328cea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#5  0x027e65f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0x05914d31 in start_thread (arg=0xae3fcb70) at pthread_create.c:304
#7  0x003b80ce in clone () at ../sysdeps/unix/sysv/linux/i386/clone.S:130
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb77a1b20 (LWP 1785)):
[KCrash Handler]
#7  operator== (value=0, this=0x9) at /usr/include/qt4/QtCore/qbasicatomic.h:70
#8  isNull (this=0xacd4858) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#9  operator! (this=0xacd4858) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#10 TaskManager::TaskItem::task (this=0xaa06ec0) at ../../../libs/taskmanager/taskitem.cpp:113
#11 0x08c9f662 in WindowTaskItem::publishIconGeometry (this=0xa7f8848) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#12 0x08cb0688 in AbstractTaskItem::timerEvent (this=0xa7f8848, event=0xbfe6b9fc) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#13 0x02b09994 in QObject::event (this=0xa7f8848, e=0xbfe6b9fc) at kernel/qobject.cpp:1181
#14 0x036f6bd4 in QGraphicsWidget::event (this=0xa7f8848, event=0xbfe6b9fc) at graphicsview/qgraphicswidget.cpp:1455
#15 0x03037d54 in notify_helper (e=0xbfe6b9fc, receiver=0xa7f8848, this=0x9c8d1a8) at kernel/qapplication.cpp:4486
#16 QApplicationPrivate::notify_helper (this=0x9c8d1a8, receiver=0xa7f8848, e=0xbfe6b9fc) at kernel/qapplication.cpp:4458
#17 0x0303d103 in QApplication::notify (this=0xbfe6b9fc, receiver=0xa7f8848, e=0xbfe6b9fc) at kernel/qapplication.cpp:3886
#18 0x0111b681 in KApplication::notify (this=0x9c72578, receiver=0xa7f8848, event=0xbfe6b9fc) at ../../kdeui/kernel/kapplication.cpp:311
#19 0x02af119e in QCoreApplication::notifyInternal (this=0x9c72578, receiver=0xa7f8848, event=0xbfe6b9fc) at kernel/qcoreapplication.cpp:787
#20 0x02b21c10 in sendEvent (event=0xbfe6b9fc, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#21 QTimerInfoList::activateTimers (this=0x9c88ec4) at kernel/qeventdispatcher_unix.cpp:603
#22 0x02b1f155 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#23 idleTimerSourceDispatch (source=0x9c88ef8) at kernel/qeventdispatcher_glib.cpp:231
#24 0x027bf25f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#25 0x027bf990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#26 0x027bfc2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#27 0x02b1fada in QEventDispatcherGlib::processEvents (this=0x9c32248, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#28 0x030efe3a in QGuiEventDispatcherGlib::processEvents (this=0x9c32248, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#29 0x02af01dd in QEventLoop::processEvents (this=0xbfe6bc74, flags=...) at kernel/qeventloop.cpp:149
#30 0x02af0421 in QEventLoop::exec (this=0xbfe6bc74, flags=...) at kernel/qeventloop.cpp:201
#31 0x02af519d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#32 0x030358f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#33 0x0026318b in kdemain (argc=1, argv=0xbfe6be74) at ../../../../plasma/desktop/shell/main.cpp:120
#34 0x0804850b in main (argc=1, argv=0xbfe6be74) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 286723, bug 286695, bug 286616, bug 286582, bug 286350.

Reported using DrKonqi