Application: plasma-desktop (0.3)
KDE Platform Version: 4.4.2 (KDE 4.4.2)
Qt Version: 4.6.2
Operating System: Linux 2.6.32-21-generic i686
Distribution: Ubuntu lucid (development branch)

-- Information about the crash:
I've removed the battery widget, after having realized that the profile list was empty.

plasma crashed then.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
[Current thread is 1 (Thread 0xb78c7aa0 (LWP 5734))]

Thread 3 (Thread 0xa8bb8b70 (LWP 5741)):
#0  0x04f0ce16 in clock_gettime () from /lib/tls/i686/cmov/librt.so.1
#1  0x02f036fb in qt_gettime () at kernel/qcore_unix.cpp:111
#2  0x02f08825 in QTimerInfoList::updateCurrentTime (this=0x992a5f4) at kernel/qeventdispatcher_unix.cpp:340
#3  0x02f0886a in QTimerInfoList::timerWait (this=0x992a5f4, tm=...) at kernel/qeventdispatcher_unix.cpp:443
#4  0x02f06818 in timerSourcePrepareHelper (src=<value optimized out>, timeout=0xa8bb80cc) at kernel/qeventdispatcher_glib.cpp:136
#5  0x02f068a5 in timerSourcePrepare (source=0x0, timeout=0x4f10ff4) at kernel/qeventdispatcher_glib.cpp:169
#6  0x02334aca in g_main_context_prepare () from /lib/libglib-2.0.so.0
#7  0x02334ee9 in ?? () from /lib/libglib-2.0.so.0
#8  0x023354b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#9  0x02f0660f in QEventDispatcherGlib::processEvents (this=0x9929060, flags=...) at kernel/qeventdispatcher_glib.cpp:414
#10 0x02ed9059 in QEventLoop::processEvents (this=0xa8bb8290, flags=) at kernel/qeventloop.cpp:149
#11 0x02ed94aa in QEventLoop::exec (this=0xa8bb8290, flags=...) at kernel/qeventloop.cpp:201
#12 0x02dd55a8 in QThread::exec (this=0x99273a8) at thread/qthread.cpp:487
#13 0x02eb8c1b in QInotifyFileSystemWatcherEngine::run (this=0x99273a8) at io/qfilesystemwatcher_inotify.cpp:248
#14 0x02dd832e in QThreadPrivate::start (arg=0x99273a8) at thread/qthread_unix.cpp:248
#15 0x0015596e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#16 0x005229de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 2 (Thread 0xa83b7b70 (LWP 5745)):
#0  0x002e2422 in __kernel_vsyscall ()
#1  0x0015a015 in pthread_cond_wait@@GLIBC_2.3.2 () from /lib/tls/i686/cmov/libpthread.so.0
#2  0x04329c97 in QTWTF::TCMalloc_PageHeap::scavengerThread (this=0x44031a0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:2304
#3  0x04329ce1 in QTWTF::TCMalloc_PageHeap::runScavengerThread (context=0x44031a0) at ../3rdparty/javascriptcore/JavaScriptCore/wtf/FastMalloc.cpp:1438
#4  0x0015596e in start_thread () from /lib/tls/i686/cmov/libpthread.so.0
#5  0x005229de in clone () from /lib/tls/i686/cmov/libc.so.6

Thread 1 (Thread 0xb78c7aa0 (LWP 5734)):
[KCrash Handler]
#6  QWeakPointer<Plasma::Extender>::isNull (this=0x9b0a248) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:546
#7  QWeakPointer<Plasma::Extender>::operator! (this=0x9b0a248) at /usr/include/qt4/QtCore/qsharedpointer_impl.h:552
#8  Plasma::Applet::extender (this=0x9b0a248) at ../../plasma/applet.cpp:752
#9  0x04c8bbd1 in Plasma::ExtenderItem::returnToSource (this=0x9b15380) at ../../plasma/extenders/extenderitem.cpp:470
#10 0x04cad9dc in ~ExtenderApplet (this=0x94fff18, __in_chrg=<value optimized out>) at ../../plasma/private/extenderapplet.cpp:42
#11 0x02ee9d65 in qDeleteInEventHandler (o=0x9b0a248) at kernel/qobject.cpp:3998
#12 0x02eeb428 in QObject::event (this=0x94fff18, e=0x20) at kernel/qobject.cpp:1231
#13 0x018eecf4 in QGraphicsWidget::event (this=0x94fff18, event=0xa8ef1a8) at graphicsview/qgraphicswidget.cpp:1361
#14 0x0121c4dc in QApplicationPrivate::notify_helper (this=0x8f2bed0, receiver=0x94fff18, e=0xa8ef1a8) at kernel/qapplication.cpp:4300
#15 0x0122305e in QApplication::notify (this=0x8f25d70, receiver=0x94fff18, e=0xa8ef1a8) at kernel/qapplication.cpp:3704
#16 0x00f0ff2a in KApplication::notify (this=0x8f25d70, receiver=0x94fff18, event=0xa8ef1a8) at ../../kdeui/kernel/kapplication.cpp:302
#17 0x02edaa3b in QCoreApplication::notifyInternal (this=0x8f25d70, receiver=0x94fff18, event=0xa8ef1a8) at kernel/qcoreapplication.cpp:704
#18 0x02edd473 in QCoreApplication::sendEvent (receiver=0x0, event_type=0, data=0x8ed1fc8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#19 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=0, data=0x8ed1fc8) at kernel/qcoreapplication.cpp:1345
#20 0x02edd5dd in QCoreApplication::sendPostedEvents (receiver=0x0, event_type=0) at kernel/qcoreapplication.cpp:1238
#21 0x02f06adf in QCoreApplication::sendPostedEvents (s=0x8f2e6b8) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#22 postEventSourceDispatch (s=0x8f2e6b8) at kernel/qeventdispatcher_glib.cpp:276
#23 0x023315e5 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#24 0x023352d8 in ?? () from /lib/libglib-2.0.so.0
#25 0x023354b8 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#26 0x02f065d5 in QEventDispatcherGlib::processEvents (this=0x8f2bba0, flags=...) at kernel/qeventdispatcher_glib.cpp:412
#27 0x012dc135 in QGuiEventDispatcherGlib::processEvents (this=0x8f2bba0, flags=...) at kernel/qguieventdispatcher_glib.cpp:204
#28 0x02ed9059 in QEventLoop::processEvents (this=0xbf8c06b4, flags=) at kernel/qeventloop.cpp:149
#29 0x02ed94aa in QEventLoop::exec (this=0xbf8c06b4, flags=...) at kernel/qeventloop.cpp:201
#30 0x02edd69f in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#31 0x0121c577 in QApplication::exec () at kernel/qapplication.cpp:3579
#32 0x0220105e in kdemain (argc=1, argv=0x8f1a278) at ../../../../plasma/desktop/shell/main.cpp:112
#33 0x0804e133 in launch (argc=<value optimized out>, _name=<value optimized out>, args=<value optimized out>, cwd=0x0, envc=0, envs=0x8efcbd0 "", reset_env=false, tty=0x0, avoid_loops=false, 
    startup_id_str=0x8051465 "0") at ../../kinit/kinit.cpp:717
#34 0x0804ec6d in handle_launcher_request (sock=<value optimized out>, who=<value optimized out>) at ../../kinit/kinit.cpp:1209
#35 0x0804f190 in handle_requests (waitForPid=<value optimized out>) at ../../kinit/kinit.cpp:1402
#36 0x0804fe4f in main (argc=4, argv=0xbf8c1164, envp=0xbf8c1178) at ../../kinit/kinit.cpp:1845

Reported using DrKonqi