Well, considering Arma2 is out, I think alot of focus is drawn away from this problem, as it has been so in the past.
I remember the old days, when OFP got alot of support, and things got covered and fixed, or at least looked into and discussed, quickly...
I too get a black screen when I start Arma, after a few minutes, I get light blue blotchy squares at the bottom, black on the top half.. you can kinda sorta make out a graphic in the background (maybe a mountain or hill), and you get some scratchy music, but that's about it...
Running a Duo Core 2.6, with 4GB ram and 3 Raid drives, an Nvidia 9800GT 512MB, etc etc
I'm so used to this now, I don't get ticked off anymore... won't be buying Arma2 or any other game from them though, I hate being a guinea pig every time.