@bahnfire or anyone else who can help:
What is your setup with the dual 6990's w/ Win 7?  If you would please give me some details as I'm trying to get mine where it should be.
I'm also using Windows 7 with Dual 6990's.  Currently I have them in crossfireX, using the latest poclbm and catalyst 11.5.  I've played around with several clock speeds, etc but nothing really make a lot of difference.
I have all 4 cores mining, but (3) are mining at 325mhs while the 4th is only at 100mhs.  Can anyone offer me some advice?
I'm using -v -w 128 --platform=0 switches.
(without --platform=0 for some reason everytime I started the 2nd core the whole machine would lock up)
Thanks