after "zypper up" not start X

Hello, i install opensuse11.1 from LiveCd with KDE
I was installed ATI driver from software.opensuse.org by “one click install”, and then reboot my PC and then he is load normally.
But when i enter command - zypper up,and install all updates my Pc can’t load X11 or KDE

Maybe somebody have solved that problem?

PC: AMD Phenom II 940BE, ATI radeon 4850 1gb, softRaid raptors 74gb, 4GB RAM DDR II.

P.S. Sorry for my BAD english

Problem solved by this command
sax2 -r -m 0=fglrx