I have used Firefox for many years, about a week before Christmas I tried to used Sky Go for the 1st time in about 6-8 weeks and it wouldn't work. It was as if there was no player at all - no buffering, no error messages, just a white background box where the player is meant to be. I recently found out that BT Player also doesn't play. That too just acts as if there is no video player there. Both used to work fine, and both still do in IE and Chrome. I have the Ad Block Plus and Flash Blocker add ons installed, but disabled for Sky Go. I have deleted and re-installed silverlight as per Sky's suggestion, and I have the Silverlight plugin "always active" in the plugins tab. The only changes that have been made since when they both worked last, and now, is updating firefox version, and changing my Internet Service Provider. Any help? I really can't stand Internet Explorer, and I'd rather use firefox than chrome as it's what I've used and trusted for years.