Version:            (using KDE 4.1.3)
OS:                Linux

I just installed Kubuntu 8.10. I updated my video drivers three times to try to solve a problem. After each time, while still using the driver upgrade utility (and just after completion of installation), Kwin would crash with the following output:

Application: KMix (kmix), signal SIGABRT
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[Thread debugging using libthread_db enabled]
[New Thread 0xb643e8d0 (LWP 5451)]
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[KCrash handler]
#6  0xb7f73430 in __kernel_vsyscall ()
#7  0xb7dc7880 in raise () from /lib/tls/i686/cmov/libc.so.6
#8  0xb7dc9248 in abort () from /lib/tls/i686/cmov/libc.so.6
#9  0xb7583795 in qt_message_output () from /usr/lib/libQtCore.so.4
#10 0xb7583872 in qFatal () from /usr/lib/libQtCore.so.4
#11 0xb7583915 in qt_assert () from /usr/lib/libQtCore.so.4
#12 0xb799354a in ?? () from /usr/lib/libsolid.so.4
#13 0xb799384f in ?? () from /usr/lib/libsolid.so.4
#14 0xb7690a60 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#15 0xb76917e2 in QMetaObject::activate () from /usr/lib/libQtCore.so.4
#16 0xb79a5853 in ?? () from /usr/lib/libsolid.so.4
#17 0xb79cb46e in ?? () from /usr/lib/libsolid.so.4
#18 0xb79cb55a in ?? () from /usr/lib/libsolid.so.4
#19 0xb74e826e in ?? () from /usr/lib/libQtDBus.so.4
#20 0xb74ef627 in ?? () from /usr/lib/libQtDBus.so.4
#21 0xb768b771 in QObject::event () from /usr/lib/libQtCore.so.4
#22 0xb6cb98ec in QApplicationPrivate::notify_helper ()
   from /usr/lib/libQtGui.so.4
#23 0xb6cc172e in QApplication::notify () from /usr/lib/libQtGui.so.4
#24 0xb7bfdb2d in KApplication::notify () from /usr/lib/libkdeui.so.5
#25 0xb767be61 in QCoreApplication::notifyInternal ()
   from /usr/lib/libQtCore.so.4
#26 0xb767cae5 in QCoreApplicationPrivate::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#27 0xb767ccdd in QCoreApplication::sendPostedEvents ()
   from /usr/lib/libQtCore.so.4
#28 0xb76a682f in ?? () from /usr/lib/libQtCore.so.4
#29 0xb66616f8 in g_main_context_dispatch () from /usr/lib/libglib-2.0.so.0
#30 0xb6664da3 in ?? () from /usr/lib/libglib-2.0.so.0
#31 0xb6664f61 in g_main_context_iteration () from /usr/lib/libglib-2.0.so.0
#32 0xb76a6478 in QEventDispatcherGlib::processEvents ()
   from /usr/lib/libQtCore.so.4
#33 0xb6d53ea5 in ?? () from /usr/lib/libQtGui.so.4
#34 0xb767a52a in QEventLoop::processEvents () from /usr/lib/libQtCore.so.4
#35 0xb767a6ea in QEventLoop::exec () from /usr/lib/libQtCore.so.4
#36 0xb767cda5 in QCoreApplication::exec () from /usr/lib/libQtCore.so.4
#37 0xb6cb9767 in QApplication::exec () from /usr/lib/libQtGui.so.4
#38 0xb7f0cabb in kdemain () from /usr/lib/libkdeinit4_kmix.so
#39 0x080485a2 in _start ()
#0  0xb7f73430 in __kernel_vsyscall ()