I'm also a newbie. Reading this post:
https://bitcointalk.org/index.php?topic=177133.0 it seems to say that you also need to have participated, in a meaningful way, before some of the restrictions are lifted.
I don't know if you also need to make a request, or if it happens automatically. I'm still limited although I've been on the board over 4 hours and have a post. I'm going to guess that my post wasn't significant enough for the moderators to think me not a troll. LOL
I'm hopeful it'll sort itself out because I have some questions that I'd like to ask on some other threads.
This link:
https://bitcointalk.org/index.php?topic=15911.0 mentions that after 5 posts on the Newbie board (the only board us newbies can post to) you'll be automatically upgraded, and it's more recent than the link above. Possibly, now 5 posts are required before the restrictions are removed?
That links to a thread made on June 2011.
Why don't you check the sticky newbie readme lol.
https://bitcointalk.org/index.php?topic=177133.0