Application: plasma-desktop (0.3)
KDE Platform Version: 4.3.80 (KDE 4.3.80 (KDE 4.4 Beta1))
Qt Version: 4.6.0
Operating System: Linux 2.6.31-17-generic x86_64
Distribution: Ubuntu 9.10

-- Information about the crash:
detached notification message from taskbar notifier to read. It stuck to my dashboard and plasma crashed when I removed it. Taskbar recovered initially but remains frozen after reproducing error.

The crash can be reproduced everytime.

 -- Backtrace:
Application: Plasma Workspace (kdeinit4), signal: Segmentation fault
The current source language is "auto; currently c".
[Current thread is 1 (Thread 0x7f1757b557f0 (LWP 3091))]

Thread 2 (Thread 0x7f172ecdb910 (LWP 3096)):
#0  pthread_cond_wait@@GLIBC_2.3.2 () at ../nptl/sysdeps/unix/sysv/linux/x86_64/pthread_cond_wait.S:261
#1  0x00007f175756e67b in QWaitConditionPrivate::wait (this=<value optimized out>, mutex=0x35bb898, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:87
#2  QWaitCondition::wait (this=<value optimized out>, mutex=0x35bb898, time=18446744073709551615) at thread/qwaitcondition_unix.cpp:159
#3  0x00007f175385b3ec in QHostInfoAgent::run (this=0x35bb880) at kernel/qhostinfo.cpp:252
#4  0x00007f175756d6c5 in QThreadPrivate::start (arg=0x35bb880) at thread/qthread_unix.cpp:244
#5  0x00007f17572dea04 in start_thread (arg=<value optimized out>) at pthread_create.c:300
#6  0x00007f1754b647bd in clone () at ../sysdeps/unix/sysv/linux/x86_64/clone.S:112
#7  0x0000000000000000 in ?? ()

Thread 1 (Thread 0x7f1757b557f0 (LWP 3091)):
[KCrash Handler]
#5  Plasma::ExtenderItem::returnToSource (this=0x3e50400) at ../../plasma/extenders/extenderitem.cpp:466
#6  0x00007f174e34cb25 in ~ExtenderApplet (this=0x3957f40, __in_chrg=<value optimized out>) at ../../plasma/private/extenderapplet.cpp:42
#7  0x00007f1757670d3d in QObject::event (this=0x3957f40, e=0x447aee0) at kernel/qobject.cpp:1243
#8  0x00007f175590003b in QGraphicsWidget::event (this=0x3957f40, event=0x447aee0) at graphicsview/qgraphicswidget.cpp:1362
#9  0x00007f17552c1e8c in QApplicationPrivate::notify_helper (this=0x24ea180, receiver=0x3957f40, e=0x447aee0) at kernel/qapplication.cpp:4242
#10 0x00007f17552c848d in QApplication::notify (this=0x24d2b80, receiver=0x3957f40, e=0x447aee0) at kernel/qapplication.cpp:4125
#11 0x00007f1755fc2666 in KApplication::notify (this=0x24d2b80, receiver=0x3957f40, event=0x447aee0) at ../../kdeui/kernel/kapplication.cpp:302
#12 0x00007f175766104c in QCoreApplication::notifyInternal (this=0x24d2b80, receiver=0x3957f40, event=0x447aee0) at kernel/qcoreapplication.cpp:704
#13 0x00007f17576637c7 in QCoreApplication::sendEvent (receiver=0x0, event_type=<value optimized out>, data=0x2461270) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:215
#14 QCoreApplicationPrivate::sendPostedEvents (receiver=0x0, event_type=<value optimized out>, data=0x2461270) at kernel/qcoreapplication.cpp:1345
#15 0x00007f175768aae3 in QCoreApplication::sendPostedEvents (s=<value optimized out>) at ../../include/QtCore/../../src/corelib/kernel/qcoreapplication.h:220
#16 postEventSourceDispatch (s=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:276
#17 0x00007f1753fd1bce in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#18 0x00007f1753fd5598 in ?? () from /lib/libglib-2.0.so.0
#19 0x00007f1753fd56c0 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#20 0x00007f175768a623 in QEventDispatcherGlib::processEvents (this=0x24e9bd0, flags=<value optimized out>) at kernel/qeventdispatcher_glib.cpp:407
#21 0x00007f17553702fe in QGuiEventDispatcherGlib::processEvents (this=0x21, flags=<value optimized out>) at kernel/qguieventdispatcher_glib.cpp:202
#22 0x00007f175765f972 in QEventLoop::processEvents (this=<value optimized out>, flags=) at kernel/qeventloop.cpp:149
#23 0x00007f175765fd4c in QEventLoop::exec (this=0x7fffdaaafca0, flags=) at kernel/qeventloop.cpp:201
#24 0x00007f1757663a8b in QCoreApplication::exec () at kernel/qcoreapplication.cpp:981
#25 0x00007f174b22bca2 in kdemain () from /usr/lib/libkdeinit4_plasma-desktop.so
#26 0x0000000000406f78 in launch (argc=1, _name=<value optimized out>, args=<value optimized out>, cwd=<value optimized out>, envc=0, envs=<value optimized out>, reset_env=false, tty=0x0, 
    avoid_loops=false, startup_id_str=0x40a4a1 "0") at ../../kinit/kinit.cpp:705
#27 0x0000000000407c70 in handle_launcher_request (sock=7, who=<value optimized out>) at ../../kinit/kinit.cpp:1197
#28 0x0000000000408121 in handle_requests (waitForPid=0) at ../../kinit/kinit.cpp:1390
#29 0x0000000000408dea in main (argc=4, argv=<value optimized out>, envp=<value optimized out>) at ../../kinit/kinit.cpp:1825
The current source language is "auto; currently asm".
The current source language is "auto; currently c".

Possible duplicates by query: bug 219194, bug 210739.

Reported using DrKonqi