Isn't there a 3 gig daily limit even on the premium accounts? You can download unlimited files at the same time, but I think they limit you to 3 gig per day total. Maybe you've gone way over and now you need to wait several days for the counter to reset. I know that happened to me one time with a GigaNews trial (1 gig limit that I went over by a couple of gigs before their system stopped me).