Ok I just got a Go Daddy advert popping up for a 1 minute then off 1 minute for a total of about 10mins then disappeared.?
Don't think it's my system because I've got other windows open and it wasn't happening on them.? (Using fire fox)

I was writing a reply in a post when it happened and it locked me out untill it went away.?

I've just done a full virus check with upto date bought AVG not the free version and my system shows clean.!! . . . Not impressed if it's a forum issue.