What kind of frame rates are we getting here for the game?
I'm on 2 GTX580 3GB's and running at 5760 x 1080 i'm looking at 20-30 FPS on average with the setting up high/ultra.
What are others getting?
On my system:
1 x 6970 = about 30 FPS (5760*1200 - Ultra)
3 * 6970s = about 10 FPS (same settings)
So, it looks like at least for AMD cards, crossfire is currently stupidly broken - try running with just 1 580, and see if that helps - I heard that nvidia had released beta drivers for Skyrim, but I don't know if they've been confirmed to improve anything.
Also, a big thanks to Hayden and Helifax - have tried both of your fixes, and both worked at getting the game playable in eyefinity res - it amazes me how the fine folks here can get seemingly far more complicated things sorted out faster than the guys at Nvidia/AMD who have most likely had access to these games for weeks in advance, but still can't release decent working driveers for weeks after they launch.
Oh well - enough whining - off to bed now, but thanks again, guys :)