Guys,
I never realised this was on here. If you look on SCN, there are K03s cars that do it as well as K04 cars (also seen on this thread), and several dont have Revo Software.
Also, my car (early 07) does only has the flat spot intermittently, and funnily hasnt done it for a good month or two now. The S3 I know of (also early 07) has the flat spot permanently last I heard.