Application: plasma-desktop (0.3)
KDE Platform Version: 4.5.3 (KDE 4.5.3)
Qt Version: 4.7.0
Operating System: Linux 2.6.35-23-generic x86_64
Distribution: Ubuntu 10.10

-- Information about the crash:
- What I was doing when the application crashed:
Just update to KDE 4.5.3 my Kubuntu 10.10 from PPA

After boot I don't see task bar or any bar. And after some time I got error about plasma crash

The crash can be reproduced every time.

-- Backtrace:
Application: Рабочее пространство Plasma (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f8f4df66780 (LWP 1762))]

Thread 3 (Thread 0x7f8f2290a710 (LWP 1766)):
#0  0x00007f8f4ab77665 in __pthread_mutex_lock (mutex=0x2207288) at pthread_mutex_lock.c:61
#1  0x00007f8f424e8a43 in g_main_context_prepare () from /lib/libglib-2.0.so.0
#2  0x00007f8f424e8e78 in ?? () from /lib/libglib-2.0.so.0
#3  0x00007f8f424e945c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#4  0x00007f8f4af201e6 in QEventDispatcherGlib::processEvents (this=0x2206f00, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:417
#5  0x00007f8f4aef2a02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#6  0x00007f8f4aef2dec in QEventLoop::exec (this=0x7f8f22909d90, flags=) at kernel/qeventloop.cpp:201
#7  0x00007f8f4adfd2fd in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:490
#8  0x00007f8f4aed25f8 in QInotifyFileSystemWatcherEngine::run (this=0x2205fc0) at io/qfilesystemwatcher_inotify.cpp:248
#9  0x00007f8f4ae0027e in QThreadPrivate::start (arg=0x2205fc0) at thread/qthread_unix.cpp:266
#10 0x00007f8f4ab75971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#11 0x00007f8f4d87a94d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#12 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f8f1c888710 (LWP 2026)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:162
#1  0x00007f8f48246334 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x7f8f48551160) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2359
#2  0x00007f8f48246369 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x7f8f4855f234) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1464
#3  0x00007f8f4ab75971 in start_thread (arg=<value optimized out>) at pthread_create.c:304
#4  0x00007f8f4d87a94d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#5  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f8f4df66780 (LWP 1762)):
[KCrash Handler]
#6  QGraphicsLayoutItem::geometry (this=0x2fbab90) at graphicsview/qgraphicslayoutitem.cpp:679
#7  0x00007f8f4a6b9b75 in QGraphicsWidget::size (this=<value optimized out>) at graphicsview/qgraphicswidget.cpp:304
#8  0x00007f8f4db42232 in ControllerWindow::syncToGraphicsWidget (this=0x2fbdb10) at ../../../../plasma/desktop/shell/controllerwindow.cpp:236
#9  0x00007f8f4db42dd6 in ControllerWindow::qt_metacall (this=0x2fbdb10, _c=QMetaObject::InvokeMetaMethod, _id=<value optimized out>, _a=0x7fff7fda0620) at ./controllerwindow.moc:81
#10 0x00007f8f4af0bb27 in QMetaObject::activate (sender=0x2903fe0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x1b) at kernel/qobject.cpp:3280
#11 0x00007f8f4af058f9 in QObject::event (this=0x2903fe0, e=0x2fbab90) at kernel/qobject.cpp:1183
#12 0x00007f8f4a03dfdc in QApplicationPrivate::notify_helper (this=0x1b12360, receiver=0x2903fe0, e=0x7fff7fda0d70) at kernel/qapplication.cpp:4396
#13 0x00007f8f4a043aed in QApplication::notify (this=0x1aff270, receiver=0x2903fe0, e=0x7fff7fda0d70) at kernel/qapplication.cpp:4277
#14 0x00007f8f4bb90526 in KApplication::notify (this=0x1aff270, receiver=0x2903fe0, event=0x7fff7fda0d70) at ../../kdeui/kernel/kapplication.cpp:310
#15 0x00007f8f4aef3cdc in QCoreApplication::notifyInternal (this=0x1aff270, receiver=0x2903fe0, event=0x7fff7fda0d70) at kernel/qcoreapplication.cpp:732
#16 0x00007f8f4af236f2 in sendEvent (this=0x1b15ae0) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#17 QTimerInfoList::activateTimers (this=0x1b15ae0) at kernel/qeventdispatcher_unix.cpp:602
#18 0x00007f8f4af204c8 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#19 idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#20 0x00007f8f424e5342 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#21 0x00007f8f424e92a8 in ?? () from /lib/libglib-2.0.so.0
#22 0x00007f8f424e945c in g_main_context_iteration () from /lib/libglib-2.0.so.0
#23 0x00007f8f4af20193 in QEventDispatcherGlib::processEvents (this=0x1ae4070, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:415
#24 0x00007f8f4a0f0a4e in QGuiEventDispatcherGlib::processEvents (this=0x7fff7fda0400, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#25 0x00007f8f4aef2a02 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#26 0x00007f8f4aef2dec in QEventLoop::exec (this=0x7fff7fda1010, flags=) at kernel/qeventloop.cpp:201
#27 0x00007f8f4aef6ebb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1009
#28 0x00007f8f4db51dc3 in kdemain (argc=<value optimized out>, argv=<value optimized out>) at ../../../../plasma/desktop/shell/main.cpp:118
#29 0x00007f8f4d7b2d8e 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=0x7fff7fda13e8) at libc-start.c:226
#30 0x0000000000400669 in _start ()

Reported using DrKonqi