did you try the suggestions in this other thread?
here- http://neurotalk.psychcentral.com/thread101423.html
like clearing the browser cache?
instructions in that link.

Just to be sure we give accurate answers will you tell us if you are using windows XP, or Vista or something else like a Mac or Linux?

what browser are you using ?
Internet Explorer {called IE for short}
Firefox {FF for short}
Opera
Flock