Application: plasma-desktop (0.4)
KDE Platform Version: 4.7.3 (4.7.3)
Qt Version: 4.7.4
Operating System: Linux 3.0.0-14-generic i686
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed:
I was typing in a Skype window.

- Unusual behavior I noticed:
A few minutes earlier I was trying to backup my bookmarks on firefox (9.0.1-FT DeepDark 2.9.6.2 theme) and no window was popping up at:

Bookmarks->Show All Bookmarks -> Import and Backup -> Backup

I closed firefox and kept typing on skype. Then plasma crashed.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0xb69c0730 (LWP 1536))]

Thread 4 (Thread 0xb0a30b70 (LWP 1537)):
#0  0x00ad6d10 in clock_gettime () from /lib/i386-linux-gnu/librt.so.1
#1  0x087fe7d5 in do_gettime (frac=0xb0a30000, sec=0xb0a2fff8) at tools/qelapsedtimer_unix.cpp:123
#2  qt_gettime () at tools/qelapsedtimer_unix.cpp:140
#3  0x088d14b6 in QTimerInfoList::updateCurrentTime (this=0xa1343bc) at kernel/qeventdispatcher_unix.cpp:339
#4  0x088d180a in QTimerInfoList::timerWait (this=0xa1343bc, tm=...) at kernel/qeventdispatcher_unix.cpp:442
#5  0x088d0053 in timerSourcePrepareHelper (src=<optimized out>, timeout=0xb0a3010c) at kernel/qeventdispatcher_glib.cpp:136
#6  0x088d00ed in timerSourcePrepare (source=0xa134388, timeout=<optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#7  0x05e0588c in g_main_context_prepare () from /lib/i386-linux-gnu/libglib-2.0.so.0
#8  0x05e06637 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#9  0x05e06c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#10 0x088d0b37 in QEventDispatcherGlib::processEvents (this=0xa132a38, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#11 0x088a11dd in QEventLoop::processEvents (this=0xb0a30290, flags=...) at kernel/qeventloop.cpp:149
#12 0x088a1421 in QEventLoop::exec (this=0xb0a30290, flags=...) at kernel/qeventloop.cpp:201
#13 0x087a490b in QThread::exec (this=0xa130bb8) at thread/qthread.cpp:498
#14 0x08881e2d in QInotifyFileSystemWatcherEngine::run (this=0xa130bb8) at io/qfilesystemwatcher_inotify.cpp:248
#15 0x087a77b3 in QThreadPrivate::start (arg=0xa130bb8) at thread/qthread_unix.cpp:331
#16 0x03971d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#17 0x003590ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 3 (Thread 0xaf02eb70 (LWP 1538)):
#0  0x05e068f0 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#1  0x05e06c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#2  0x088d0b37 in QEventDispatcherGlib::processEvents (this=0xa2c90a0, flags=...) at kernel/qeventdispatcher_glib.cpp:424
#3  0x088a11dd in QEventLoop::processEvents (this=0xaf02e290, flags=...) at kernel/qeventloop.cpp:149
#4  0x088a1421 in QEventLoop::exec (this=0xaf02e290, flags=...) at kernel/qeventloop.cpp:201
#5  0x087a490b in QThread::exec (this=0xa2c8c18) at thread/qthread.cpp:498
#6  0x08881e2d in QInotifyFileSystemWatcherEngine::run (this=0xa2c8c18) at io/qfilesystemwatcher_inotify.cpp:248
#7  0x087a77b3 in QThreadPrivate::start (arg=0xa2c8c18) at thread/qthread_unix.cpp:331
#8  0x03971d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#9  0x003590ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 2 (Thread 0xacc7eb70 (LWP 1546)):
#0  0x03973dc6 in pthread_mutex_lock () from /lib/i386-linux-gnu/libpthread.so.0
#1  0x00366f14 in pthread_mutex_lock () from /lib/i386-linux-gnu/libc.so.6
#2  0x05e06723 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#3  0x05e06f9b in g_main_loop_run () from /lib/i386-linux-gnu/libglib-2.0.so.0
#4  0x059f2cea in ?? () from /usr/lib/i386-linux-gnu/libgio-2.0.so.0
#5  0x05e2d5f4 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#6  0x03971d31 in start_thread () from /lib/i386-linux-gnu/libpthread.so.0
#7  0x003590ce in clone () from /lib/i386-linux-gnu/libc.so.6
Backtrace stopped: Not enough registers or memory available to unwind further

Thread 1 (Thread 0xb69c0730 (LWP 1536)):
[KCrash Handler]
#7  isNull (this=0x1) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#8  operator! (this=0x1) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#9  TaskManager::TaskItem::task (this=0xaad1898) at ../../../libs/taskmanager/taskitem.cpp:113
#10 0x04bef662 in WindowTaskItem::publishIconGeometry (this=0xb4123c0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#11 0x04c00688 in AbstractTaskItem::timerEvent (this=0xb4123c0, event=0xbfa5991c) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#12 0x088ba994 in QObject::event (this=0xb4123c0, e=0xbfa5991c) at kernel/qobject.cpp:1181
#13 0x01bf5bd4 in QGraphicsWidget::event (this=0xb4123c0, event=0xbfa5991c) at graphicsview/qgraphicswidget.cpp:1455
#14 0x01536d54 in notify_helper (e=0xbfa5991c, receiver=0xb4123c0, this=0x98595c8) at kernel/qapplication.cpp:4486
#15 QApplicationPrivate::notify_helper (this=0x98595c8, receiver=0xb4123c0, e=0xbfa5991c) at kernel/qapplication.cpp:4458
#16 0x0153c103 in QApplication::notify (this=0xbfa5991c, receiver=0xb4123c0, e=0xbfa5991c) at kernel/qapplication.cpp:3886
#17 0x0118d681 in KApplication::notify (this=0x983e0e8, receiver=0xb4123c0, event=0xbfa5991c) at ../../kdeui/kernel/kapplication.cpp:311
#18 0x088a219e in QCoreApplication::notifyInternal (this=0x983e0e8, receiver=0xb4123c0, event=0xbfa5991c) at kernel/qcoreapplication.cpp:787
#19 0x088d2c10 in sendEvent (event=0xbfa5991c, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#20 QTimerInfoList::activateTimers (this=0x9856ab4) at kernel/qeventdispatcher_unix.cpp:603
#21 0x088d0122 in timerSourceDispatch (source=0x9856a80) at kernel/qeventdispatcher_glib.cpp:184
#22 0x05e0625f in g_main_context_dispatch () from /lib/i386-linux-gnu/libglib-2.0.so.0
#23 0x05e06990 in ?? () from /lib/i386-linux-gnu/libglib-2.0.so.0
#24 0x05e06c2a in g_main_context_iteration () from /lib/i386-linux-gnu/libglib-2.0.so.0
#25 0x088d0ada in QEventDispatcherGlib::processEvents (this=0x9808218, flags=...) at kernel/qeventdispatcher_glib.cpp:422
#26 0x015eee3a in QGuiEventDispatcherGlib::processEvents (this=0x9808218, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x088a11dd in QEventLoop::processEvents (this=0xbfa59b94, flags=...) at kernel/qeventloop.cpp:149
#28 0x088a1421 in QEventLoop::exec (this=0xbfa59b94, flags=...) at kernel/qeventloop.cpp:201
#29 0x088a619d in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x015348f4 in QApplication::exec () at kernel/qapplication.cpp:3760
#31 0x0045e18b in kdemain (argc=1, argv=0xbfa59d94) at ../../../../plasma/desktop/shell/main.cpp:120
#32 0x0804850b in main (argc=1, argv=0xbfa59d94) at plasma-desktop_dummy.cpp:3

Possible duplicates by query: bug 291577, bug 291569, bug 291555, bug 291530, bug 291511.

Reported using DrKonqi