AMD Catalyst 11.6 GUI Miner 2011-07-01 unstable after update

[Forp]

Never change a running system. 

I felt tempted to upgrade AMD Catalyst from 11.5 to 11.6 (link at AMD). Afterwards GUI miner did not work so I removed and reinstalled the new version.

This is one windows 7 / 64 bit.

Since then my system is unstable. 

This means: I get a frozen system in 10 - 20 % of the restarts and the system stops mining and freezes after some 8 - 15 hours of mining.

No error logs or events pointing out the reason.

I am not overclocking or otherwise provoking things and before that on 11.5 and the May (?) version of GUI miner everything was rock solid and stable.

Any similar experiences ? Any ideas ?

[fascistmuffin]

Have you tried using a complete uninstalling program, like Revo, to remove Catalyst?

[Forp]

Thank you very much for the hint ! 

I checked the temperatur and it looks to me that for some reason the temperature with the new Catalyst is higher (maybe they use the GPU more efficiently). I had had some freezes earlier when the temperature went over 90 celsius - so I reduced the frequency to stay around 83 at most and checked during the night. Rock stable until now. So currently I suspect it was a different reason...