Just a small glitch, on 2.55 if I have 4x anti aliasing set in the Catalyst drivers version 10.02, all screens “sail around” on the screen whenever I move the cursor. Setting any other AA setting is fine.
I don’t know if it’s proper to send bugs here? I’m all new to Blender, just need to make some prototype images, I’m a blacksmith… Didn’t do any modelling in years 
Now trying to figure this thing out. Thus far seems great 