I replied in the PM you sent me just moments ago, but I'd try clearing any cookies you have for jriver.com. If that fails to help, perhaps download and run ccleaner. Also, try disabling any extensions you might have installed (especially things like GreaseMonkey that might be re-scripting pages on the fly). It is possible that there is some weird bug in the forum software, I suppose, but I also am using the Firefox 4 betas and haven't had any similar issues.
