Application: plasma-desktop (0.4)
KDE Platform Version: 4.5.80 (4.6 Beta1)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-23-generic x86_64
Distribution: Ubuntu 10.10

-- Information about the crash:
I was pushing two times the show desktop button on my main panel while i had chromium loading 22 tabs, only one main panel, only  one app -chromium-, in kubuntu with kde 4.6 beta 1.

-- Backtrace:
Application: Plasma Desktop Shell (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f92294cf7a0 (LWP 1848))]

Thread 4 (Thread 0x7f92060e7700 (LWP 1852)):
#0  0x00007f921dba29f6 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#1  0x00007f921dba2e78 in ?? () from /lib/libglib-2.0.so.0
#2  0x00007f921dba345c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#3  0x00007f92261611e6 in QEventDispatcherGlib::processEvents (this=0x16373e0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#4  0x00007f9226133a02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#5  0x00007f9226133dec in QEventLoop::exec (this=0x7f92060e6cb0, flags=) at kernel/qeventloop.cpp:201
#6  0x00007f922603e2fd in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#7  0x00007f92261135f8 in QInotifyFileSystemWatcherEngine::run (this=0x1954300) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f922604127e in QThreadPrivate::start (arg=0x1954300) at thread/qthread_unix.cpp:266
#9  0x00007f92213d2953 in ?? () from /usr/lib/nvidia-current/libGL.so.1
#10 0x00007f921e255971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#11 0x00007f9228de292d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f92058e6700 (LWP 1853)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007f92058e59b0 in ?? ()
#2  0x00007fffd9fff852 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 2 (Thread 0x7f92016f1700 (LWP 1855)):
#0  0xffffffffff60017b in ?? ()
#1  0x00007f92016f0990 in ?? ()
#2  0x00007fffd9fff852 in ?? ()
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 1 (Thread 0x7f92294cf7a0 (LWP 1848)):
[KCrash Handler]
#6  value (this=0x2061620, host=0x1764dc0) at /usr/include/qt4/QtCore/qhash.h:606
#7  SystemTray::Task::isEmbeddable (this=0x2061620, host=0x1764dc0) at ../../../../../plasma/generic/applets/systemtray/core/task.cpp:91
#8  0x00007f92077f820c in SystemTray::TaskArea::addWidgetForTask (this=0x17e8f90, task=0x2061620) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:236
#9  0x00007f92077f9552 in SystemTray::TaskArea::delayedReposition (this=0x17e8f90) at ../../../../../plasma/generic/applets/systemtray/ui/taskarea.cpp:202
#10 0x00007f92077f9754 in SystemTray::TaskArea::qt_metacall (this=0x17e8f90, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fffd9f63d20) at ./taskarea.moc:92
#11 0x00007f922614cb27 in QMetaObject::activate (sender=0x17ead30, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x3) at kernel/qobject.cpp:3280
#12 0x00007f92261468f9 in QObject::event (this=0x17ead30, e=0x1764dc0) at kernel/qobject.cpp:1183
#13 0x00007f922549bfdc in QApplicationPrivate::notify_helper (this=0x11977d0, receiver=0x17ead30, e=0x7fffd9f64470) at kernel/qapplication.cpp:4396
#14 0x00007f92254a1aed in QApplication::notify (this=0x116b6f0, receiver=0x17ead30, e=0x7fffd9f64470) at kernel/qapplication.cpp:4277
#15 0x00007f9226e32e06 in KApplication::notify (this=0x116b6f0, receiver=0x17ead30, event=0x7fffd9f64470) at ../../kdeui/kernel/kapplication.cpp:311
#16 0x00007f9226134cdc in QCoreApplication::notifyInternal (this=0x116b6f0, receiver=0x17ead30, event=0x7fffd9f64470) at kernel/qcoreapplication.cpp:732
#17 0x00007f92261646f2 in sendEvent (this=0x119acf0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#18 QTimerInfoList::activateTimers (this=0x119acf0) at kernel/qeventdispatcher_unix.cpp:602
#19 0x00007f92261614c8 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#20 idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#21 0x00007f921db9f342 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#22 0x00007f921dba32a8 in ?? () from /lib/libglib-2.0.so.0
#23 0x00007f921dba345c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#24 0x00007f9226161193 in QEventDispatcherGlib::processEvents (this=0x1102250, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#25 0x00007f922554ea4e in QGuiEventDispatcherGlib::processEvents (this=0x2061620, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#26 0x00007f9226133a02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#27 0x00007f9226133dec in QEventLoop::exec (this=0x7fffd9f64710, flags=) at kernel/qeventloop.cpp:201
#28 0x00007f9226137ebb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#29 0x00007f92290c04e3 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/desktop/shell/main.cpp:118
#30 0x00007f9228d1ad8e in __libc_start_main (main=<value optimized out>, argc=<value optimized out>, ubp_av=<value optimized out>, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fffd9f64ae8) at libc-start.c:226
#31 0x0000000000400669 in _start ()

Possible duplicates by query: bug 259071, bug 258795, bug 258752, bug 258688, bug 258617.

Reported using DrKonqi