COMMUNITY : HELP : BUGS

It seems I cannot change the pictures on Instructables. I am running windows xp pro Service pack 3 on a fairly powerful Machine. I am running Firefox 9.0.1 with the latest versions of all major plugins (flash, java, wmp, vlc, etc...). However when I go onto any instructable, it seems I cannot change the pictures by clicking on the thumbnails...

Tried it on about 50 different instructables, all have the same problem, tried everything i could think of to fix (disabling all extensions, restarting browser, restarting computer)

EDIT: Seems only to affect Firefox, other browsers are working fine...