When I go to certain websites such as Huffington Post or even Facebook typing in them is very slow or delayed. The text I am typing does not appear as I'm typing it on a realtime basis. The text I'm typing now is fine and it's not my keyboard as typing text in Word causes no such problems. Is there something about the code used for text/comment boxes that could cause this?
I've had the same problem too - for me, it was an animated persona that caused the problem. As it turns out, any animated persona I try slows down typing in any window, and seems to slow down the entire application too.
If you've changed personas recently, I'd try that first!
Why is firefox offering personas that slow their browser down so badly? I like the animated personas, but I couldn't find a single one that worked without causing this problem... and I have a pretty fast computer and an updated browser. Either fix the problem, or don't offer a feature that messes everything else up!