The first thing I have noticed is that there are far too many sections for such an unused forum.
Start of small - with a couple of sub-forums, when they start getting filled up and used more, then you can make more.
I did the exact same thing with my first forum - made loads and loads of sections, but then users go to the
website hosting and see there is maybe like 2 or 3 topics per section, and if those topics don't have any replies, then it is pointless signing up to a dead forum!
The best advice I could give to increase forum traffic, is to get your friends / family to join, even if you are only making small talk in the chatty part of the forum, it will make it look a bit more active and this will make people feel more comfortable about joining up.