Originally Posted by BSA70
I use firefox, it has always run great...
Had a feeling this is what you use. Since you probably didn't try a different browser, give IE a shot (or Chrome/Opera) to verify the slow typing doesn't occur in them.
I'll do some searching online, but I think the fix for this is to create a new profile. But it could also be an issue with a recently installed/upgraded add-on.
Also, maybe try firefox in safe mode.
Start->Programs->Mozilla Firefox->Firefox (safe mode)
Otherwise, Start->RUN->Firefox -safe-mode
This of course assumes you're using Windows...if using Linux, a penguin will hopefully be along shortly to help out.