When I go to Kongregate.com, all games stay just a black screen. When I right-click to pull up info about the flash game, it doesn't recognize there's even a game there. When I go to same site in IE, it works. I'm running latest version of Firefox, cleared cache, cookies and files and flash has been reinstalled, just incase.I do have some add-ons in use but I had no problem until last night and the night before I was playing games on the same website. Now, even the games I played won't work.