my game did the same thing, its not the browser cache, but their system(kongregate's). since they have a huge amount of developers uploading all kind of sorts of games daily the servers may skip your update content submission! it toked 1 week for my pool test game to adjust! not sure why, dident asked them... but it wasn't my firefox cache. or internet explorer, or anything else, however after each submission i did, there is a note saying that the new files will take around 48 hrs to update, that is like a + - another 48 hrs! so u should wait! or contact their support if your in a hurry!