Description of problem:
It sometimes happen when I try to log out from my KDE desktop. I have no other idea why this might have happened.

Version-Release number of selected component:
kde-workspace-4.11.3-1.fc19

Additional info:
reporter:       libreport-2.1.9
backtrace_rating: 4
cmdline:        /usr/bin/plasma-desktop --nocrashhandler
crash_function: exit
executable:     /usr/bin/plasma-desktop
kernel:         3.11.7-200.fc19.x86_64
runlevel:       N 5
type:           CCpp
uid:            1000

Truncated backtrace:
Thread no. 1 (10 frames)
 #8 exit at exit.c:99
 #9 _IceDefaultIOErrorHandler at error.c:603
 #10 IceFlush at misc.c:78
 #11 sm_setProperty at kernel/qapplication_x11.cpp:5677
 #14 sm_performSaveYourself at kernel/qapplication_x11.cpp:5756
 #15 sm_saveYourselfCallback at kernel/qapplication_x11.cpp:5735
 #16 _SmcProcessMessage at sm_process.c:241
 #17 IceProcessMessages at process.c:386
 #18 QMetaObject::activate at kernel/qobject.cpp:3547
 #19 QSocketNotifier::activated at .moc/release-shared/moc_qsocketnotifier.cpp:102

Potential duplicate: bug 922249