ATI Mobility Radeon HD 3650: crash on X startup

I am trying to use the proprietary catalyst driver with my ATI Mobility Radeon HD 3650 chipset on an HP Elitebook 8530p on a newly installed openSUSE 11.1.

Version 8.11 of the driver installs fine, X starts up fine, but it is running quite unstable (frequent crashes when playing video, switching consoles,…).

But when installing a newer driver (8.12 or 9.1) the maching crashes on the startup of X (under Gnome and KDE 4.x, under GDM and KDM), leaving a blank screen and an unresponsive maching. I used the same procedure to install 8.11 and 8.12/9.1: Download driver, run, ati-config --initial (I tried with and without sax2 -r -m 0=fglrx).

In the Xorg.0.log file I find (for 8.12) the following lines:

Backtrace:
0: /usr/bin/X(xf86SigHandler+0x79) [0x80c0c19]
1: [0xffffe400]

Fatal server error:
Caught signal 11.  Server aborting

Full Xorg.0.log files:
(8.12): http://pastebin.com/f3a672c79
(9.1): http://pastebin.com/d6ed2784f

Does somebody have any idea, on what I am doing wrong? Or did I find a bug in the driver itself?

Correct link for 9.1 log file:

pastebin - collaborative debugging tool

Sorry.