We are still having an extensive russian mafia spambot issue, so registration approvals are still manual.
The main mod that was doing this has been out of the hemisphere for a month, so they're getting delayed.
Existing members that know of "friends" who have registered and needs approvals can PM a mod (myself included) with the specific usernames of these people, and they'll be approved on the spot.
While we endeavour to do our best and keeping on top of the list, there are over 300+ in the queue right now. Most of them bots.
We're no different than other forums. Just last year I had to wait almost 6 weeks for one forum, 4 weeks at another.