Application: plasma-desktop (0.4)
KDE Platform Version: 4.6.2 (4.6.2)
Qt Version: 4.7.2
Operating System: Linux 2.6.38-8-generic x86_64
Distribution: Ubuntu 11.04

-- Information about the crash:
- What I was doing when the application crashed:
I was surfing on the internet and downloading some files in Firefox 4.0.1.

The crash can be reproduced some of the time.

-- Backtrace:
Application: Plasma-Desktop-Umgebung (plasma-desktop), signal: Segmentation fault
[Current thread is 1 (Thread 0x7f0bd63797a0 (LWP 1539))]

Thread 4 (Thread 0x7f0bae21e700 (LWP 1542)):
#0  0x00007f0bd2e8015d in QTimerInfoList::repairTimersIfNeeded (this=0x7f0ba8001860) at kernel/qeventdispatcher_unix.cpp:395
#1  0x00007f0bd2e801c6 in QTimerInfoList::timerWait (this=0x7f0ba8001860, tm=...) at kernel/qeventdispatcher_unix.cpp:443
#2  0x00007f0bd2e7ec2c in timerSourcePrepareHelper (src=<value optimized out>, timeout=0x7f0bae21dc2c) at kernel/qeventdispatcher_glib.cpp:136
#3  0x00007f0bd2e7ecd5 in timerSourcePrepare (source=<value optimized out>, timeout=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:169
#4  0x00007f0bca6520a2 in g_main_context_prepare () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#5  0x00007f0bca652f9d in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f0bca653639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#7  0x00007f0bd2e7f446 in QEventDispatcherGlib::processEvents (this=0x1cfae10, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#8  0x00007f0bd2e53882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#9  0x00007f0bd2e53abc in QEventLoop::exec (this=0x7f0bae21ddb0, flags=...) at kernel/qeventloop.cpp:201
#10 0x00007f0bd2d6a924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#11 0x00007f0bd2e35c2f in QInotifyFileSystemWatcherEngine::run (this=0x1cf9bc0) at io/qfilesystemwatcher_inotify.cpp:248
#12 0x00007f0bd2d6d175 in QThreadPrivate::start (arg=0x1cf9bc0) at thread/qthread_unix.cpp:320
#13 0x00007f0bcaf56d8c in start_thread (arg=0x7f0bae21e700) at pthread_create.c:304
#14 0x00007f0bd5c7e04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#15 0x0000000000000000 in ?? ()

Thread 3 (Thread 0x7f0ba7fff700 (LWP 1543)):
#0  0x00007f0bca652a39 in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#1  0x00007f0bca6533a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0bca653639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0bd2e7f446 in QEventDispatcherGlib::processEvents (this=0x1d71590, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:424
#4  0x00007f0bd2e53882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#5  0x00007f0bd2e53abc in QEventLoop::exec (this=0x7f0ba7ffedb0, flags=...) at kernel/qeventloop.cpp:201
#6  0x00007f0bd2d6a924 in QThread::exec (this=<value optimized out>) at thread/qthread.cpp:492
#7  0x00007f0bd2e35c2f in QInotifyFileSystemWatcherEngine::run (this=0x1d70b60) at io/qfilesystemwatcher_inotify.cpp:248
#8  0x00007f0bd2d6d175 in QThreadPrivate::start (arg=0x1d70b60) at thread/qthread_unix.cpp:320
#9  0x00007f0bcaf56d8c in start_thread (arg=0x7f0ba7fff700) at pthread_create.c:304
#10 0x00007f0bd5c7e04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#11 0x0000000000000000 in ?? ()

Thread 2 (Thread 0x7f0ba3f36700 (LWP 1549)):
#0  0x00007f0bcaf593c4 in __pthread_mutex_lock (mutex=0x2145068) at pthread_mutex_lock.c:61
#1  0x00007f0bca651669 in g_main_context_acquire () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#2  0x00007f0bca652f21 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#3  0x00007f0bca6539f2 in g_main_loop_run () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#4  0x00007f0ba504dc44 in ?? () from /usr/lib/x86_64-linux-gnu/libgio-2.0.so.0
#5  0x00007f0bca67a3e4 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#6  0x00007f0bcaf56d8c in start_thread (arg=0x7f0ba3f36700) at pthread_create.c:304
#7  0x00007f0bd5c7e04d in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#8  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f0bd63797a0 (LWP 1539)):
[KCrash Handler]
#6  0x00007f0bd2d88d77 in hash (key=...) at tools/qhash.cpp:81
#7  qHash (key=...) at tools/qhash.cpp:95
#8  0x00007f0bd3b734b1 in QHash<QString, QCache<QString, QPixmap>::Node>::findNode (this=0x1927c58, akey=..., ahp=0x0) at /usr/include/qt4/QtCore/qhash.h:880
#9  0x00007f0bd3b7361f in QHash<QString, QCache<QString, QPixmap>::Node>::remove (this=0x1927c58, akey=<value optimized out>) at /usr/include/qt4/QtCore/qhash.h:789
#10 0x00007f0bd3b73797 in unlink (this=0x1927c48, m=10476880) at /usr/include/qt4/QtCore/qcache.h:74
#11 QCache<QString, QPixmap>::trim (this=0x1927c48, m=10476880) at /usr/include/qt4/QtCore/qcache.h:209
#12 0x00007f0bd3b738d3 in QCache<QString, QPixmap>::insert (this=0x1927c48, akey=..., aobject=0x14c15c0, acost=8880) at /usr/include/qt4/QtCore/qcache.h:188
#13 0x00007f0bd3b731e5 in insertPixmap (this=0x18fc010, key=..., pixmap=...) at ../../kdeui/util/kimagecache.cpp:58
#14 KImageCache::insertPixmap (this=0x18fc010, key=..., pixmap=...) at ../../kdeui/util/kimagecache.cpp:113
#15 0x00007f0bd5845e37 in Plasma::ThemePrivate::scheduledCacheUpdate (this=0x14b4bf0) at ../../plasma/theme.cpp:302
#16 0x00007f0bd5849112 in Plasma::Theme::qt_metacall (this=0x1400730, _c=QMetaObject::InvokeMetaMethod, _id=5, _a=0x7fff1a53c1e0) at ./theme.moc:119
#17 0x00007f0bd2e695f8 in QMetaObject::activate (sender=0x14675f0, m=<value optimized out>, local_signal_index=<value optimized out>, argv=0x0) at kernel/qobject.cpp:3287
#18 0x00007f0bd2e681c9 in QObject::event (this=0x14675f0, e=<value optimized out>) at kernel/qobject.cpp:1190
#19 0x00007f0bd22159e4 in QApplicationPrivate::notify_helper (this=0x140dc50, receiver=0x14675f0, e=0x7fff1a53c8e0) at kernel/qapplication.cpp:4462
#20 0x00007f0bd221a3aa in QApplication::notify (this=<value optimized out>, receiver=0x14675f0, e=0x7fff1a53c8e0) at kernel/qapplication.cpp:4341
#21 0x00007f0bd3b0c866 in KApplication::notify (this=0x13db020, receiver=0x14675f0, event=0x7fff1a53c8e0) at ../../kdeui/kernel/kapplication.cpp:311
#22 0x00007f0bd2e5449c in QCoreApplication::notifyInternal (this=0x13db020, receiver=0x14675f0, event=0x7fff1a53c8e0) at kernel/qcoreapplication.cpp:731
#23 0x00007f0bd2e81f12 in sendEvent (this=0x140cc00) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#24 QTimerInfoList::activateTimers (this=0x140cc00) at kernel/qeventdispatcher_unix.cpp:604
#25 0x00007f0bd2e7ed18 in timerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:184
#26 idleTimerSourceDispatch (source=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:231
#27 0x00007f0bca652bcd in g_main_context_dispatch () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#28 0x00007f0bca6533a8 in ?? () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#29 0x00007f0bca653639 in g_main_context_iteration () from /lib/x86_64-linux-gnu/libglib-2.0.so.0
#30 0x00007f0bd2e7f3ef in QEventDispatcherGlib::processEvents (this=0x138a340, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:422
#31 0x00007f0bd22bcdfe in QGuiEventDispatcherGlib::processEvents (this=<value optimized out>, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:204
#32 0x00007f0bd2e53882 in QEventLoop::processEvents (this=<value optimized out>, flags=...) at kernel/qeventloop.cpp:149
#33 0x00007f0bd2e53abc in QEventLoop::exec (this=0x7fff1a53cb50, flags=...) at kernel/qeventloop.cpp:201
#34 0x00007f0bd2e57ecb in QCoreApplication::exec () at kernel/qcoreapplication.cpp:1008
#35 0x00007f0bd5f6a897 in kdemain (argc=1, argv=0x7fff1a53cf18) at ../../../../plasma/desktop/shell/main.cpp:118
#36 0x00007f0bd5bb6eff in __libc_start_main (main=0x400740 <main(int, char**)>, argc=1, ubp_av=0x7fff1a53cf18, init=<value optimized out>, fini=<value optimized out>, rtld_fini=<value optimized out>, stack_end=0x7fff1a53cf08) at libc-start.c:226
#37 0x0000000000400669 in _start ()

Reported using DrKonqi