Hmm - okay people..... Found out that small size shapes/fills (less than approx. 3px width/height) have a tendency to render in a slightly distorted way. The image from the post before this - where the white dots are zoomed/scaled x10 times - shows this behaviour. It seems that, if you use the new 'object drawing' mode, things get a little better, but still - I find it quite weird that flash isn't more precise, even at small shape sizes.?