I haven't seen any difference apart from a very few Lj layouts. Apparently S2 layouts are much better, and communities are more likely to be affected.

I actually don't mind the comment thingy as it seems to be much quicker to post a comment on it than the other method and my broadband appears fast enough to allow my icons to load very quickly.

I'm using chrome with the Lj add on (which I adore for speed!)