Nope. Rolledback before JC2. But was testing Red Faction G, Shattered Horizon, L4D2, etc...maxed in 10-20 min bursts.
I've been gaming all day yesterday after I rolledback and everything seems fine I think. I do get some weird graphical glitches in JC2 demo with SSAO on when I drive real fast, but I think that's because my card can't handle SSAO (9800GTX+).