Bob,
Yep I think you are right, I remember having to enter it again because I didn't see it the first time. I recently re-registered and was having problems (could only make posts from work but not at home). I was having problems with internet settings, something about my "cookies". I got it resolved by lowering my internet cookies security settings to medium from high.
Anyway, Thanks. My replies are working every time now. Merry Christmas.