Not quite sure which issues you're referring to...
But really, development for AMD F@H has been stagnant for quite a while now, and the 6xxx series cards are the most "difficult" to get going. The stable GPU2 program doesn't support 6xxx cards even with the proper flags last I checked, and the only way to get it going is by using a beta client that has a much crappier interface compared to the standard GUI. I probably ran a couple workunits on my card before I gave up.