Version:           4.3.2 (using KDE 4.3.2)
Compiler:          4.4.2 Gentoo 
OS:                Linux
Installed from:    Gentoo Packages

When using more instances of one application they got collapsed in taskbar into one item. When i click to expand them so i can pick one of them plasma crashes.

Trace:

Application: Pracovní plocha Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f879f9b8770 (LWP 9786))]

Thread 3 (Thread 0x7f878238d910 (LWP 9787)):
#0  0x00007f87989a1289 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/libpthread.so.0
#1  0x00007f879d028b0b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0xe308c8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0xe308c8, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f879946b1c4 in QHostInfoAgent::run (this=0xe308b0) at kernel/qhostinfo.cpp:252
#4  0x00007f879d027b95 in QThreadPrivate::start (arg=0xe308b0) at thread/qthread_unix.cpp:244
#5  0x00007f879899d2f7 in start_thread () from /lib/libpthread.so.0
#6  0x00007f879f2d238d in clone () from /lib/libc.so.6
#7  0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f877bfff910 (LWP 9788)):
#0  0x00007f879f2cb7a2 in select () from /lib/libc.so.6
#1  0x00007f879d0f6442 in QProcessManager::run (this=0x7f879d42df00) at io/qprocess_unix.cpp:241
#2  0x00007f879d027b95 in QThreadPrivate::start (arg=0x7f879d42df00) at thread/qthread_unix.cpp:244
#3  0x00007f879899d2f7 in start_thread () from /lib/libpthread.so.0
#4  0x00007f879f2d238d in clone () from /lib/libc.so.6
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f879f9b8770 (LWP 9786)):
[KCrash Handler]
#5  0x00007f879eed8635 in Plasma::PaintUtils::transition (from=..., to=..., amount=<value optimized out>) at /var/tmp/portage/kde-base/kdelibs-4.3.2-r2/work/kdelibs-4.3.2/plasma/paintutils.cpp:157
#6  0x00007f8785ae24c3 in AbstractTaskItem::drawBackground (this=0x403e900, painter=0x7fff834eccb0, option=<value optimized out>)
    at /var/tmp/portage/kde-base/plasma-workspace-4.3.2/work/plasma-workspace-4.3.2/plasma/applets/tasks/abstracttaskitem.cpp:582
#7  0x00007f8785ade9bd in AbstractTaskItem::paint (this=0x403e900, painter=0x7fff834eccb0, option=0x62a7e8, widget=0xee5620)
    at /var/tmp/portage/kde-base/plasma-workspace-4.3.2/work/plasma-workspace-4.3.2/plasma/applets/tasks/abstracttaskitem.cpp:488
#8  0x00007f879cb65236 in _q_paintItem (item=<value optimized out>, painter=0x7fff834eccb0, option=0x62a7e8, widget=0xee5620, useWindowOpacity=<value optimized out>, 
    painterStateProtection=<value optimized out>) at graphicsview/qgraphicsscene.cpp:4109
#9  0x00007f879cb74e4e in QGraphicsScenePrivate::drawItemHelper (this=0x62a5a0, item=0x403e910, painter=0x7fff834eccb0, option=0x62a7e8, widget=0xee5620, painterStateProtection=true)
    at graphicsview/qgraphicsscene.cpp:4178
#10 0x00007f879cb7741b in QGraphicsScenePrivate::draw (this=<value optimized out>, item=0x403e910, painter=<value optimized out>, viewTransform=<value optimized out>, 
    transformPtr=<value optimized out>, exposedRegion=<value optimized out>, widget=0xee5620, opacity=<value optimized out>, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true)
    at graphicsview/qgraphicsscene.cpp:4641
#11 0x00007f879cb77e22 in QGraphicsScenePrivate::drawSubtreeRecursive (this=<value optimized out>, item=0x403e910, painter=0x7fff834eccb0, viewTransform=0x7fff834ecaa0, exposedRegion=0x10f3bf0, 
    widget=0xee5620, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4574
#12 0x00007f879cb772da in QGraphicsScenePrivate::draw (this=<value optimized out>, item=0xe59050, painter=<value optimized out>, viewTransform=<value optimized out>, 
    transformPtr=<value optimized out>, exposedRegion=<value optimized out>, widget=0xee5620, opacity=<value optimized out>, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true)
    at graphicsview/qgraphicsscene.cpp:4655
#13 0x00007f879cb77e22 in QGraphicsScenePrivate::drawSubtreeRecursive (this=<value optimized out>, item=0xe59050, painter=0x7fff834eccb0, viewTransform=0x7fff834ecaa0, exposedRegion=0x10f3bf0, 
    widget=0xee5620, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4574
#14 0x00007f879cb772da in QGraphicsScenePrivate::draw (this=<value optimized out>, item=0xd6e0f0, painter=<value optimized out>, viewTransform=<value optimized out>, 
    transformPtr=<value optimized out>, exposedRegion=<value optimized out>, widget=0xee5620, opacity=<value optimized out>, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true)
    at graphicsview/qgraphicsscene.cpp:4655
#15 0x00007f879cb77e22 in QGraphicsScenePrivate::drawSubtreeRecursive (this=<value optimized out>, item=0xd6e0f0, painter=0x7fff834eccb0, viewTransform=0x7fff834ecaa0, exposedRegion=0x10f3bf0, 
    widget=0xee5620, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4574
#16 0x00007f879cb772da in QGraphicsScenePrivate::draw (this=<value optimized out>, item=0xd190f0, painter=<value optimized out>, viewTransform=<value optimized out>, 
    transformPtr=<value optimized out>, exposedRegion=<value optimized out>, widget=0xee5620, opacity=<value optimized out>, effectTransform=0x0, wasDirtyParentSceneTransform=false, drawItem=true)
    at graphicsview/qgraphicsscene.cpp:4655
#17 0x00007f879cb77e22 in QGraphicsScenePrivate::drawSubtreeRecursive (this=<value optimized out>, item=0xd190f0, painter=0x7fff834eccb0, viewTransform=0x7fff834ecaa0, exposedRegion=0x10f3bf0, 
    widget=0xee5620, parentOpacity=<value optimized out>, effectTransform=0x0) at graphicsview/qgraphicsscene.cpp:4574
#18 0x00007f879cb78597 in QGraphicsScenePrivate::drawItems (this=0x62a5a0, painter=0x7fff834eccb0, viewTransform=0x7fff834ecaa0, exposedRegion=0x10f3bf0, widget=0xee5620)
    at graphicsview/qgraphicsscene.cpp:4478
#19 0x00007f879cb8e99e in QGraphicsView::paintEvent (this=0xe71350, event=<value optimized out>) at graphicsview/qgraphicsview.cpp:3308
#20 0x00007f879f5a07ce in PanelView::paintEvent (this=0x186e3e0, event=0x7fff834ea4f0)
    at /var/tmp/portage/kde-base/plasma-workspace-4.3.2/work/plasma-workspace-4.3.2/plasma/shells/desktop/panelview.cpp:1290
#21 0x00007f879c64bf08 in QWidget::event (this=0xe71350, event=0x7fff834ed550) at kernel/qwidget.cpp:8050
#22 0x00007f879c982b9e in QFrame::event (this=0xe71350, e=0x7fff834ed550) at widgets/qframe.cpp:557
#23 0x00007f879cb9126b in QGraphicsView::viewportEvent (this=0xe71350, event=0x7fff834ed550) at graphicsview/qgraphicsview.cpp:2708
#24 0x00007f879d11833e in QCoreApplicationPrivate::sendThroughObjectEventFilters (this=<value optimized out>, receiver=0xee5620, event=0x7fff834ed550) at kernel/qcoreapplication.cpp:819
#25 0x00007f879c5f826c in QApplicationPrivate::notify_helper (this=0x633dd0, receiver=0xee5620, e=0x7fff834ed550) at kernel/qapplication.cpp:4273
#26 0x00007f879c601160 in QApplication::notify (this=0x61d800, receiver=0xee5620, e=0x7fff834ed550) at kernel/qapplication.cpp:4166
#27 0x00007f879dd35968 in KApplication::notify (this=0x61d800, receiver=0xee5620, event=0x7fff834ed550)
    at /var/tmp/portage/kde-base/kdelibs-4.3.2-r2/work/kdelibs-4.3.2/kdeui/kernel/kapplication.cpp:302
#28 0x00007f879d118f0b in QCoreApplication::notifyInternal (this=0x61d800, receiver=0xee5620, event=0x7fff834ed550) at kernel/qcoreapplication.cpp:704
#29 0x00007f879c64d3d9 in QCoreApplication::sendSpontaneousEvent (this=0x10f4250, pdev=<value optimized out>, rgn=..., offset=<value optimized out>, flags=<value optimized out>, sharedPainter=0x0, 
    backingStore=0xea39a0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:218
#30 QWidgetPrivate::drawWidget (this=0x10f4250, pdev=<value optimized out>, rgn=..., offset=<value optimized out>, flags=<value optimized out>, sharedPainter=0x0, backingStore=0xea39a0)
    at kernel/qwidget.cpp:5276
#31 0x00007f879c64e072 in QWidgetPrivate::paintSiblingsRecursive (this=<value optimized out>, pdev=<value optimized out>, siblings=..., index=2, rgn=<value optimized out>, 
    offset=<value optimized out>, flags=4, sharedPainter=0x0, backingStore=0xea39a0) at kernel/qwidget.cpp:5386
#32 0x00007f879c64de77 in QWidgetPrivate::paintSiblingsRecursive (this=<value optimized out>, pdev=<value optimized out>, siblings=..., index=4, rgn=<value optimized out>, 
    offset=<value optimized out>, flags=4, sharedPainter=0x0, backingStore=0xea39a0) at kernel/qwidget.cpp:5377
#33 0x00007f879c64de77 in QWidgetPrivate::paintSiblingsRecursive (this=<value optimized out>, pdev=<value optimized out>, siblings=..., index=5, rgn=<value optimized out>, 
    offset=<value optimized out>, flags=4, sharedPainter=0x0, backingStore=0xea39a0) at kernel/qwidget.cpp:5377
#34 0x00007f879c64de77 in QWidgetPrivate::paintSiblingsRecursive (this=<value optimized out>, pdev=<value optimized out>, siblings=..., index=6, rgn=<value optimized out>, 
    offset=<value optimized out>, flags=4, sharedPainter=0x0, backingStore=0xea39a0) at kernel/qwidget.cpp:5377
#35 0x00007f879c64de77 in QWidgetPrivate::paintSiblingsRecursive (this=<value optimized out>, pdev=<value optimized out>, siblings=..., index=7, rgn=<value optimized out>, 
    offset=<value optimized out>, flags=4, sharedPainter=0x0, backingStore=0xea39a0) at kernel/qwidget.cpp:5377
#36 0x00007f879c64de77 in QWidgetPrivate::paintSiblingsRecursive (this=<value optimized out>, pdev=<value optimized out>, siblings=..., index=8, rgn=<value optimized out>, 
    offset=<value optimized out>, flags=4, sharedPainter=0x0, backingStore=0xea39a0) at kernel/qwidget.cpp:5377
#37 0x00007f879c64de77 in QWidgetPrivate::paintSiblingsRecursive (this=<value optimized out>, pdev=<value optimized out>, siblings=..., index=9, rgn=<value optimized out>, 
    offset=<value optimized out>, flags=4, sharedPainter=0x0, backingStore=0xea39a0) at kernel/qwidget.cpp:5377
#38 0x00007f879c64d1a4 in QWidgetPrivate::drawWidget (this=0x10f3730, pdev=<value optimized out>, rgn=..., offset=<value optimized out>, flags=<value optimized out>, sharedPainter=0x0, 
    backingStore=0xea39a0) at kernel/qwidget.cpp:5325
#39 0x00007f879c7e174a in QWidgetBackingStore::sync (this=0xea39a0) at painting/qbackingstore.cpp:1288
#40 0x00007f879c63f762 in QWidgetPrivate::syncBackingStore (this=0x10f3730) at kernel/qwidget.cpp:1661
#41 0x00007f879c64c666 in QWidget::event (this=0xe71350, event=0x404bab0) at kernel/qwidget.cpp:8196
#42 0x00007f879c982b9e in QFrame::event (this=0xe71350, e=0x404bab0) at widgets/qframe.cpp:557
#43 0x00007f879ca045eb in QAbstractScrollArea::event (this=0xe71350, e=0x404bab0) at widgets/qabstractscrollarea.cpp:944
#44 0x00007f879f5a1d22 in PanelView::event (this=0xe71350, event=0x404bab0) at /var/tmp/portage/kde-base/plasma-workspace-4.3.2/work/plasma-workspace-4.3.2/plasma/shells/desktop/panelview.cpp:1313
#45 0x00007f879c5f828c in QApplicationPrivate::notify_helper (this=0x633dd0, receiver=0xe71350, e=0x404bab0) at kernel/qapplication.cpp:4277
#46 0x00007f879c601160 in QApplication::notify (this=0x61d800, receiver=0xe71350, e=0x404bab0) at kernel/qapplication.cpp:4166
#47 0x00007f879dd35968 in KApplication::notify (this=0x61d800, receiver=0xe71350, event=0x404bab0) at /var/tmp/portage/kde-base/kdelibs-4.3.2-r2/work/kdelibs-4.3.2/kdeui/kernel/kapplication.cpp:302
#48 0x00007f879d118f0b in QCoreApplication::notifyInternal (this=0x61d800, receiver=0xe71350, event=0x404bab0) at kernel/qcoreapplication.cpp:704
#49 0x00007f879d11b636 in QCoreApplication::sendEvent (receiver=0xe71350, event_type=<value optimized out>, data=0x605b90) at kernel/qcoreapplication.h:215
#50 QCoreApplicationPrivate::sendPostedEvents (receiver=0xe71350, event_type=<value optimized out>, data=0x605b90) at kernel/qcoreapplication.cpp:1345
#51 0x00007f879cb7b9aa in QGraphicsViewPrivate::dispatchPendingUpdateRequests (this=0x62a5a0) at ../../include/QtGui/private/../../../src/gui/graphicsview/qgraphicsview_p.h:178
#52 QGraphicsScenePrivate::_q_processDirtyItems (this=0x62a5a0) at graphicsview/qgraphicsscene.cpp:476
#53 0x00007f879cb7bd61 in QGraphicsScene::qt_metacall (this=0xaa0610, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x23df7a0) at .moc/release-shared/moc_qgraphicsscene.cpp:128
#54 0x00007f879eebb917 in Plasma::Corona::qt_metacall (this=0x186e3e0, _c=2202969328, _id=191, _a=0x35) at /var/tmp/portage/kde-base/kdelibs-4.3.2-r2/work/kdelibs-4.3.2_build/plasma/corona.moc:107
#55 0x00007f879f592fd5 in DesktopCorona::qt_metacall (this=0x186e3e0, _c=2202969328, _id=191, _a=0x35)
    at /var/tmp/portage/kde-base/plasma-workspace-4.3.2/work/plasma-workspace-4.3.2_build/plasma/shells/desktop/desktopcorona.moc:65
#56 0x00007f879d128b11 in QObject::event (this=0xaa0610, e=0x413e770) at kernel/qobject.cpp:1238
#57 0x00007f879cb72b92 in QGraphicsScene::event (this=0xaa0610, event=0x413e770) at graphicsview/qgraphicsscene.cpp:3366
#58 0x00007f879c5f828c in QApplicationPrivate::notify_helper (this=0x633dd0, receiver=0xaa0610, e=0x413e770) at kernel/qapplication.cpp:4277
#59 0x00007f879c601160 in QApplication::notify (this=0x61d800, receiver=0xaa0610, e=0x413e770) at kernel/qapplication.cpp:4166
#60 0x00007f879dd35968 in KApplication::notify (this=0x61d800, receiver=0xaa0610, event=0x413e770) at /var/tmp/portage/kde-base/kdelibs-4.3.2-r2/work/kdelibs-4.3.2/kdeui/kernel/kapplication.cpp:302
#61 0x00007f879d118f0b in QCoreApplication::notifyInternal (this=0x61d800, receiver=0xaa0610, event=0x413e770) at kernel/qcoreapplication.cpp:704
#62 0x00007f879d11b636 in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x605b90) at kernel/qcoreapplication.h:215
#63 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x605b90) at kernel/qcoreapplication.cpp:1345
#64 0x00007f879d1426d3 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at kernel/qcoreapplication.h:220
#65 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276
#66 0x00007f8797019da3 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#67 0x00007f879701d3d0 in ?? () from /usr/lib/libglib-2.0.so.0
#68 0x00007f879701d4e8 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#69 0x00007f879d1421be in QEventDispatcherGlib::processEvents (this=0x6057c0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#70 0x00007f879c68dea6 in QGuiEventDispatcherGlib::processEvents (this=0x186e3e0, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#71 0x00007f879d117832 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#72 0x00007f879d117bfd in QEventLoop::exec (this=0x7fff834efed0, flags=) at kernel/qeventloop.cpp:201
#73 0x00007f879d11b8db in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#74 0x00007f879f59862f in kdemain (argc=<value optimized out>, argv=<value optimized out>)
    at /var/tmp/portage/kde-base/plasma-workspace-4.3.2/work/plasma-workspace-4.3.2/plasma/shells/desktop/main.cpp:50
#75 0x00007f879f21ea26 in __libc_start_main () from /lib/libc.so.6
#76 0x00000000004007a9 in _start ()