kicker crash

I have a kicker crash problem.My system is kubuntu feisty with kde 3.5.7.
The backtrace is this
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Using host libthread_db library "/lib/tls/i686/cmov/libthread_db.so.1".
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[Thread debugging using libthread_db enabled]
[New Thread -1232426784 (LWP 5695)]
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[KCrash handler]
#6 0xb59dd8c4 in TaskContainer::updateKickerTip ()
   from /usr/lib/libtaskbar.so.1
#7 0xb65e1f72 in KickerTip::display () from /usr/lib/libkickermain.so.1
#8 0xb65e24ef in KickerTip::qt_invoke () from /usr/lib/libkickermain.so.1
#9 0xb72b088b in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#10 0xb72b1330 in QObject::activate_signal () from /usr/lib/libqt-mt.so.3
#11 0xb763e872 in QTimer::timeout () from /usr/lib/libqt-mt.so.3
#12 0xb72d8596 in QTimer::event () from /usr/lib/libqt-mt.so.3
#13 0xb7247a60 in QApplication::internalNotify () from /usr/lib/libqt-mt.so.3
#14 0xb724988f in QApplication::notify () from /usr/lib/libqt-mt.so.3
#15 0xb794fc32 in KApplication::notify () from /usr/lib/libkdecore.so.4
#16 0xb71da1e9 in QApplication::sendEvent () from /usr/lib/libqt-mt.so.3
#17 0xb723a4ab in QEventLoop::activateTimers () from /usr/lib/libqt-mt.so.3
#18 0xb71eed25 in QEventLoop::processEvents () from /usr/lib/libqt-mt.so.3
#19 0xb7262136 in QEventLoop::enterLoop () from /usr/lib/libqt-mt.so.3
#20 0xb7261f46 in QEventLoop::exec () from /usr/lib/libqt-mt.so.3
#21 0xb7249609 in QApplication::exec () from /usr/lib/libqt-mt.so.3
#22 0xb66ebda2 in kdemain () from /usr/lib/libkdeinit_kicker.so
#23 0xb7fcd464 in kdeinitmain () from /usr/lib/kde3/kicker.so
#24 0x0804e6bf in ?? ()
#25 0x00000001 in ?? ()
#26 0x0809e710 in ?? ()
#27 0x00000001 in ?? ()
#28 0x00000000 in ?? ()