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:I was trying to install samba4 from terminal(yakuake) while the Muon package manager was open. I was going back and forth because it(samba4) would not install properly. I also had 2 dolphin windows open, one user and the other root. while making changes and going back and forth, plasma crashed.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f6e694997c0 (LWP 6831))]

Thread 4 (Thread 0x7f6e44a1a700 (LWP 6832)):
#0  0x00007f6e5de11034 in __pthread_mutex_lock (mutex=0x17bbcf8) at pthread_mutex_lock.c:61
#1  0x00007f6e5d300e5d in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6e5d301dfd in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6e5d302429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f6e65f68f3e in QEventDispatcherGlib::processEvents (this=0x17ac140, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#5  0x00007f6e65f3ccf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#6  0x00007f6e65f3cef7 in QEventLoop::exec (this=0x7f6e44a19cd0, flags=...) at kernel/qeventloop.cpp:201
#7  0x00007f6e65e5427f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#8  0x00007f6e65f1fcbf in QInotifyFileSystemWatcherEngine::run (this=0x17a8e50) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f6e65e56d05 in QThreadPrivate::start (arg=0x17a8e50) at thread/qthread_unix.cpp:331
#10 0x00007f6e5a61b56c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#11 0x00007f6e5de0eefc in start_thread (arg=0x7f6e44a1a700) at pthread_create.c:304
#12 0x00007f6e68d8389d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#13 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f6e3e1d4700 (LWP 6833)):
#0  0x00007f6e68d77773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f6e5d301f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6e5d302429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6e65f68f3e in QEventDispatcherGlib::processEvents (this=0x198e6c0, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f6e65f3ccf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f6e65f3cef7 in QEventLoop::exec (this=0x7f6e3e1d3cd0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f6e65e5427f in QThread::exec (this=<optimized out>) at thread/qthread.cpp:498
#7  0x00007f6e65f1fcbf in QInotifyFileSystemWatcherEngine::run (this=0x19886b0) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f6e65e56d05 in QThreadPrivate::start (arg=0x19886b0) at thread/qthread_unix.cpp:331
#9  0x00007f6e5a61b56c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f6e5de0eefc in start_thread (arg=0x7f6e3e1d4700) at pthread_create.c:304
#11 0x00007f6e68d8389d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f6e386c6700 (LWP 6841)):
#0  0x00007f6e68d77773 in __GI___poll (fds=<optimized out>, nfds=<optimized out>, timeout=<optimized out>) at ../sysdeps/unix/sysv/linux/poll.c:87
#1  0x00007f6e5d301f68 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f6e5d302792 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f6e391a4516 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#4  0x00007f6e5d3272b6 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f6e5a61b56c in ?? () from /usr/lib/nvidia-current/libGL.so.1
#6  0x00007f6e5de0eefc in start_thread (arg=0x7f6e386c6700) at pthread_create.c:304
#7  0x00007f6e68d8389d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f6e694997c0 (LWP 6831)):
[KCrash Handler]
#6  isNull (this=0x610d969600000001) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:568
#7  operator! (this=0x610d969600000001) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:574
#8  TaskManager::TaskItem::task (this=0x2a47510) at ../../../libs/taskmanager/taskitem.cpp:113
#9  0x00007f6e4dc4e112 in WindowTaskItem::publishIconGeometry (this=0x26b00f0) at ../../../../../plasma/desktop/applets/tasks/windowtaskitem.cpp:120
#10 0x00007f6e4dc5cb7c in AbstractTaskItem::timerEvent (this=0x26b00f0, event=<optimized out>) at ../../../../../plasma/desktop/applets/tasks/abstracttaskitem.cpp:439
#11 0x00007f6e65f54789 in QObject::event (this=0x26b00f0, e=<optimized out>) at kernel/qobject.cpp:1181
#12 0x00007f6e6590c89b in QGraphicsWidget::event (this=0x26b00f0, event=0x7fff27121950) at graphicsview/qgraphicswidget.cpp:1455
#13 0x00007f6e652ee424 in notify_helper (e=0x7fff27121950, receiver=0x26b00f0, this=0xd7a500) at kernel/qapplication.cpp:4486
#14 QApplicationPrivate::notify_helper (this=0xd7a500, receiver=0x26b00f0, e=0x7fff27121950) at kernel/qapplication.cpp:4458
#15 0x00007f6e652f3291 in QApplication::notify (this=0xd6f8e0, receiver=0x26b00f0, e=0x7fff27121950) at kernel/qapplication.cpp:4365
#16 0x00007f6e66bec126 in KApplication::notify (this=0xd6f8e0, receiver=0x26b00f0, event=0x7fff27121950) at ../../kdeui/kernel/kapplication.cpp:311
#17 0x00007f6e65f3dafc in QCoreApplication::notifyInternal (this=0xd6f8e0, receiver=0x26b00f0, event=0x7fff27121950) at kernel/qcoreapplication.cpp:787
#18 0x00007f6e65f6ad62 in sendEvent (event=0x7fff27121950, receiver=<optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QTimerInfoList::activateTimers (this=0xd80150) at kernel/qeventdispatcher_unix.cpp:603
#20 0x00007f6e65f68538 in timerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#21 idleTimerSourceDispatch (source=<optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#22 0x00007f6e5d301a5d in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#23 0x00007f6e5d302258 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#24 0x00007f6e5d302429 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#25 0x00007f6e65f68ed6 in QEventDispatcherGlib::processEvents (this=0xcc0f40, flags=<optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#26 0x00007f6e6539607e in QGuiEventDispatcherGlib::processEvents (this=<optimized out>, flags=<optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#27 0x00007f6e65f3ccf2 in QEventLoop::processEvents (this=<optimized out>, flags=...) at kernel/qeventloop.cpp:149
#28 0x00007f6e65f3cef7 in QEventLoop::exec (this=0x7fff27121be0, flags=...) at kernel/qeventloop.cpp:201
#29 0x00007f6e65f41789 in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1064
#30 0x00007f6e690821a3 in kdemain (argc=1, argv=0x7fff27121fc8) at ../../../../plasma/desktop/shell/main.cpp:120
#31 0x00007f6e68cc330d in __libc_start_main (main=0x400640 <main(int, char**)>, argc=1, ubp_av=0x7fff27121fc8, init=<optimized out>, fini=<optimized out>, rtld_fini=<optimized out>, stack_end=0x7fff27121fb8) at libc-start.c:226
#32 0x0000000000400671 in _start ()

Possible duplicates by query: bug 290713, bug 290700, bug 290686, bug 290685, bug 290677.

Reported using DrKonqi