Me too all day, I've narrowed it down to the google analytics javascript embedded into the pages but admin advised that they havent changed anything recently. I put it down to an incompatability with win98se??
I've got a workaround though which works if anyone wants to try it:
find your hosts file, in win98 its in C:\windows\hosts
add this to it and save the file:
# [Google Inc]
127.0.0.1
www.google-analytics.com
this prevents the .js from running.
Works for me but dont blame me if you break your pc
grant