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 x86_64
Distribution: Ubuntu 11.10

-- Information about the crash:
- What I was doing when the application crashed: Sometimes if I changed the network connection or also closed sometimes if I from Firefox the dialogue 'side information'.

- Custom settings of the application:

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f79376797a0 (LWP 1892))]

Thread 4 (Thread 0x7f7915112700 (LWP 1893)):
#0  0x00007f792b993310 in ?? () from /usr/lib/x86_64-linux-gnu/libgthread-2.0.so.0
#1  0x00007f792b4fe3dd in g_thread_self () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f792b4d8419 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f793413ef3e in QEventDispatcherGlib::processEvents (this=0x2fd7410, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f7934112cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f7934112ef7 in QEventLoop::exec (this=0x7f7915111db0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f793402a27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f79340f5cbf in QInotifyFileSystemWatcherEngine::run (this=0x2fd36d0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f793402cd05 in QThreadPrivate::start (arg=0x2fd36d0) at thread/qthread_unix.cpp:331
#9  0x00007f792bfe4efc in start_thread (arg=0x7f7915112700) at pthread_create.c:304
#10 0x00007f7936f5989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f791261a700 (LWP 1894)):
#0  0x00007f792b4abe2b in g_ptr_array_set_size () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f792b4d6f06 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f792b4d7dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f792b4d8429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f793413ef3e in QEventDispatcherGlib::processEvents (this=0x31e9600, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f7934112cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f7934112ef7 in QEventLoop::exec (this=0x7f7912619db0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f793402a27f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007f79340f5cbf in QInotifyFileSystemWatcherEngine::run (this=0x31e8e50) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f793402cd05 in QThreadPrivate::start (arg=0x31e8e50) at thread/qthread_unix.cpp:331
#10 0x00007f792bfe4efc in start_thread (arg=0x7f791261a700) at pthread_create.c:304
#11 0x00007f7936f5989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f790b29e700 (LWP 1900)):
#0  0x00007f7936f4d773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f792b4d7f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f792b4d8792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f790bd7c516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f792b4fd2b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f792bfe4efc in start_thread (arg=0x7f790b29e700) at pthread_create.c:304
#6  0x00007f7936f5989d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f79376797a0 (LWP 1892)):
[KCrash Handler]
#6  isNull (this=0x300030003307e0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x300030003307e0) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x385da90) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007f791dfe5112 in WindowTaskItem::publishIconGeometry (this=0x2dc3de0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007f791dff3b7c in AbstractTaskItem::timerEvent (this=0x2dc3de0, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007f793412a789 in QObject::event (this=0x2dc3de0, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007f7933ae289b in QGraphicsWidget::event (this=0x2dc3de0, event=0x7ffff2e47640) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007f79334c4424 in notify_helper (e=0x7ffff2e47640, receiver=0x2dc3de0, this=0x25b38d0) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0x25b38d0, receiver=0x2dc3de0, e=0x7ffff2e47640) at kernel/qapplication.cpp:4458
#15 0x00007f79334c9291 in QApplication::notify (this=0x25960c0, receiver=0x2dc3de0, e=0x7ffff2e47640) at kernel/qapplication.cpp:4365
#16 0x00007f7934dc2126 in KApplication::notify (this=0x25960c0, receiver=0x2dc3de0, event=0x7ffff2e47640) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f7934113afc in QCoreApplication::notifyInternal (this=0x25960c0, receiver=0x2dc3de0, event=0x7ffff2e47640) at kernel/qcoreapplication.cpp:787
#18 0x00007f7934140d62 in sendEvent (event=0x7ffff2e47640, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0x25b2ee0) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007f793413e538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f792b4d7a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f792b4d8258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f792b4d8429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f793413eed6 in QEventDispatcherGlib::processEvents (this=0x2538f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007f793356c07e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f7934112cf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f7934112ef7 in QEventLoop::exec (this=0x7ffff2e478d0, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007f7934117789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007f79372581a3 in kdemain (argc=1, argv=0x7ffff2e47cb8) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007f7936e9930d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7ffff2e47cb8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7ffff2e47ca8) at libc-start.c:226
#32 0x0000000000400671 in _start ()

Possible duplicates by query: bug 291600, bug 291577, bug 291569, bug 291555, bug 291530.

Reported using DrKonqi