Shoutbox

I don't notice any freezing, only notice you can't scroll once clicking a link to a new page whilst it loads it, but that lasts less than a second, if it's lasting 5 seconds for you, I'd suggest it's either slow internet connection or bad cpu/memory.

The scrollbar 'freezing' I get happens on all sites though, I'm guessing that IE turns scrolling off as it loads a new page or something, as it doesn't happen in FF