depends on what browser you are using for the mac. Safari lets you draw lines without anti-aliasing, but when you switch to larger brushes it slows the fuck down to syrup speeds. Firefox draws small lines with anti-aliasing, but when you use the fill you get the annoying white dots, also Firefox gets a little slow when you are zoomed in. Thats what I've noticed, could just be for my little macintosh. And yes, macs do handle java differently, from what I understand it is currently being sorted out.