At the time I wasn't even aware that it was in any way related to playing the FoF Alpha, and ended up formatting my machine to start from scratch. Everything was running sweetly .. until I set up the FoF Alpha again, and the same issue arose. I uninstalled Python 2.6, set up the 3.120 Beta 1 version of Frets, and it's playing as sweet as a nut again. So, assuming that the updated drivers has solved your situation, it seems that there's some kind of rare Python 2.6 / Graphic conflict somewhere.
I'm running an NVIDIA GeForce 8300 GS card here, so the Catalyst solution is out of the question, sadly.
** Please note: This is not me griping or complaining about anything here. While I'm gutted at not being able to play the Alpha releases, at least I still have the latest Beta that I can use .. I just figured posting this might be informative in some way.
