With enough detail so that anybody here can try it and search for a cause.
Kees
alright I've been happily using firefox for quite some time. The only issue I am having is that avatars on forums are not moving, but in IE they are working fine. I have d/l flash and such...and have tried it with and without my firewall. Any ideas?

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic