fedora KDE桌面崩溃的问题

今天让fedora9更新了一下，重启后进kde，kde就崩溃掉了。。。。
求各位大哥帮帮我啊～～
Application: Plasma 工作区 (plasma), signal SIGSEGV
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[Thread debugging using libthread_db enabled]
[New Thread 0xb8092740 (LWP 2819)]
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
(no debugging symbols found)
[KCrash handler]
#6 0x07d274b7 in QGraphicsLayoutItem::isLayout () from /usr/lib/libQtGui.so.4
#7 0x07d26231 in ?? () from /usr/lib/libQtGui.so.4
#8 0x07d2809a in QGraphicsLinearLayout::insertItem ()
from /usr/lib/libQtGui.so.4
#9 0x06715e17 in ?? () from /usr/lib/kde4/plasma_applet_devicenotifier.so
#10 0x06715fb7 in ?? () from /usr/lib/kde4/plasma_applet_devicenotifier.so
#11 0x001bb185 in Plasma::Applet::flushPendingConstraintsEvents ()
from /usr/lib/libplasma.so.2
#12 0x001bb7c6 in Plasma::Applet::timerEvent () from /usr/lib/libplasma.so.2
#13 0x013063cf in QObject::event () from /usr/lib/libQtCore.so.4
#14 0x07d2af87 in QGraphicsWidget::event () from /usr/lib/libQtGui.so.4
#15 0x0776af8c in QApplicationPrivate::notify_helper ()
from /usr/lib/libQtGui.so.4
#16 0x07772e2e in QApplication::notify () from /usr/lib/libQtGui.so.4
#17 0x06f8c95d in KApplication::notify () from /usr/lib/libkdeui.so.5
#18 0x012f6c51 in QCoreApplication::notifyInternal ()
from /usr/lib/libQtCore.so.4
#19 0x01324c31 in ?? () from /usr/lib/libQtCore.so.4
#20 0x01321440 in ?? () from /usr/lib/libQtCore.so.4
#21 0x01e2e098 in g_main_context_dispatch () from /lib/libglib-2.0.so.0
#22 0x01e31743 in ?? () from /lib/libglib-2.0.so.0
#23 0x01e31901 in g_main_context_iteration () from /lib/libglib-2.0.so.0
#24 0x01321398 in QEventDispatcherGlib::processEvents ()
from /usr/lib/libQtCore.so.4
#25 0x07804105 in ?? () from /usr/lib/libQtGui.so.4
#26 0x012f533a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#27 0x012f54fa in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#28 0x004809fb in KIO::NetAccess::enter_loop () from /usr/lib/libkio.so.5
#29 0x00480bfc in KIO::NetAccess::statInternal () from /usr/lib/libkio.so.5
#30 0x004818ab in KIO::NetAccess::stat () from /usr/lib/libkio.so.5
#31 0x0048192b in KIO::NetAccess::mostLocalUrl () from /usr/lib/libkio.so.5
#32 0x02301efe in ?? () from /usr/lib/kde4/plasma_applet_icon.so
#33 0x023026ef in ?? () from /usr/lib/kde4/plasma_applet_icon.so
#34 0x001e37d7 in Plasma::Corona::loadLayout () from /usr/lib/libplasma.so.2
#35 0x001e3b81 in Plasma::Corona::initializeLayout ()
from /usr/lib/libplasma.so.2
#36 0x00131989 in ?? () from /usr/lib/libkdeinit4_plasma.so
#37 0x001335e7 in ?? () from /usr/lib/libkdeinit4_plasma.so
#38 0x00133711 in ?? () from /usr/lib/libkdeinit4_plasma.so
#39 0x00124e0a in kdemain () from /usr/lib/libkdeinit4_plasma.so
#40 0x080487d2 in _start ()
#0 0x00110416 in __kernel_vsyscall ()