Erratic: As far as I know it is registered, the launcher no longer gives a register offer and instead gives a link called "Registered users" that goes to the website.
The only thing I can think of is when i first went to the downloadable content section I put my cd code in for the preorder on the troll thing, and it failed. But now when I try I make sure its blank.
Namur: Yeah, in that case the game is registered and you should be able to download the DLC and i just spotted a thread where someone else is having the same problem.
I don't know if closing the launcher and running the patcher.exe from the game folder would reset whatever it is getting in the way there.
I kept getting errors about connection refused, so I thought perhaps the connection was dropping and the error message I was getting was bogus. So I started the download for the Polish voice overs thinking that was a large enough download where I'd see if I get the same problem. Unfortunately that one seems to be working fine and while its downloading I can't figure out how to cancel it to try the Troll one again.
When its done downloading I'll try rebooting the pc and seeing if that fixes the troll download.
As a side question does anyone know how to remove a downloadable content after its been downloaded?