I did the latest updates and my PC and Laptop and both have crashed.
The laptop can not run X got errors : Xauth: error while loading shared libraries:
libmuu.so.1
libX11 cannot open object file : no such file or directory.

The PC has shared libararies loading problems with kudzu .
KDE won't start , say's decop server not running
Gnome just starts but say's can not run Nautlis, no icons on desktop,
you get upper and lower task bars, xcdroast can not find cd burner.

All I can say don't reboot you computer if you got latest updates
I have never seen a crash like this in Linux and I have been using it since 1998

thanks

Jim

Most likely you mean libXmuu.so.1 which is part of xorg-x11-libs.

Be sure to report your experience at http://bugzilla.redhat.com -- did a brief check of the bug database, but couldn't find a similar report. One of the latest updates was glibc and no update broke anything here. All went fine. But SELinux is disabled here, and with a different configuration, the results might be different.