270.30 and a few problems
Xorg sometiems crashes (xorg-server 188.8.131.521 and 1.10) with nvidia-drivres-270.30
Next strange thing is window resize corruption with composite enabled: when resizing some parts of windows didn't render properly (renders as desktop wallpaper or KDM background). When you do a lot of resizing - sometimes it hangs for a few seconds.
And next question, about old problems:
I still can reproduce:
1) Xorg sometimes didn't start. Sigsegv at startup. Happens with xorg-servre 1.9+ at least. Screen goes black, then I see garbage in text mode. Around 3-5 restarts with unloading driver helps.
2) OpenGL apps hangs when powermizer enabled. Kernel lock-up. Will be memorydump useful for this (if I'll manage to load crashkernel)
OS: Gentoo Linux, ~amd64. VideoCard: GeForce GTX 470. ASUS P8P67 Deluxe, 2x4GB DDR3-1600 CL9, Core i7 2600k.