Yep, I'm in the same boat as wahoho.
I tried 4 email addresses, 3 names, 2 browsers, 2 firewalls, 2 anti-viruseseses.
Activated my UBRS account without a problem.
Can't activate DLC.
Once - for the hell of it - I tried (re)registering with the same details, just to check, and was told that the DLC account was already active.
Can we find thitcho.mamtom and hurt him?
(I'm new. I'm keen. I'm ready.)