Re: Beta driver and kernel 2.6.31-rt11
got the same on my laptop with Debian Squeeze. Sometimes glxgears shows something like 8-10k FPS and on other occasions only 60FPS (same as monitor refresh rate).
It seems that the FPS-drop happens after I used nvidia-settings to look at the powermizer.
After a fresh restart it shows the 10k FPS again.
hope it helps