Like a lot of people here, i'm facing a lot of problems.
First I often get the black screen an CTD without any error message, i tried every single solution i could find, but still not working (actually i have to try the 4gb patch, but i'm waiting that steam re-download the game), i can play the game but it randomly crash...
Next i have lot of lag issues, and they don't come from my computer i guess (and hope), my rig is Windows 7 64 bits on i7 965 (3.20 gHz), GTX 480 + GTX 260, 8 Go Ram...
I play on ultra and everything maxed out, everthing goes well (50 - 60 fps), except some f***** lags when i'm loading distants details, LODs, and textures. This problem is particularly present when i travel outside... I tried also lot of things to fix this, i played also in high graphics but it was the same, i disabled the AA and tried to activate it from my driver and not from the game, nope...
So i really hope Bethesda will release a patch soon, really soon !
If someone was succesfull by trying fixing that problems, any help would be great

And sorry for my english, i'm french

