I'm a web designer who really loves litestep.
I've been using litestep for 2 years on a windows 2k machine and it works real fine. However when i upgraded to win xp flash slows down whenever i use litestep.
Does this ever happen to you guys?

i guess it depends on the theme you're using. some themes just use more resource than others.

Yes, I had this problem for a while. I noticed it would also happen when I ran Quicktime. However, recently it went away. I've been testing out the betas of 24.7 so perhaps they fix it.

but Egonz may be right too, what theme are you using?