The 1.1.1 update is both good and bad, it fells like the frame rate is much better, however crashes now happen every 30 mins.
Also I can no longer alt-tab out. Upon returning to the game, when it tries to load new content into the big openworld cell OR I change cell, then the game crashes.

I'm using 2 radeon HD 5800 in crossfirex. anyone else having same kinds of trouble ?

Maybe you didn't get it, yet. Current version is 1.2.0.285.

I think he mean the 1.2.0.285 update and unfortunately i have to agree, as said http://www.gamesas.com/index.php?/topic/1138825-more-and-more-crashes/page__view__findpost__p__16665417 before performance with win7 is great now, but stability is bad and during only one evening i've had more crashes and freezes than in 60h before with 1.1.

please devs fix this with the announced big patch the next weeks, performance is great with 1.2 but in fact this is worthless with so much crashes and bad stability!