I suggested in another post a Request for help, or "Ask a question on the forum" dialog.
I think it would work well, not only making it easier for people to post in the right section, but providing standard information to people trying to help out.
How about a pop up dialog, with a series or pages,each with a question and a series of check boxes, then "next" to carry on.
For example, the first page would be roughly what the problem is about, for an example, they could select PC Problem. Then the next page select OS, for example Windows XP / 2000, then if the problem is Hardware, Software, OS based, email, peripherals, etc. The next page would allow the poster to add a description of the problem.
By there selections, the post could automatically be placed in the relevant forum / sub forum - solving any misplaced post issues, and also include extra information to help people solve there problem. By automatically showing the users Operating system, or maybe on a hardware problem showing there rig from there profile, or something similar for other areas of the forum, such as what web technology they are using.
The series of pop up dialogs would also allow you to provide the user with information, such as the final page would inform users, how to keep track of there post, by visiting the Control Panel.
I imagine that would take a lot of coding, but personally think that it would have real benefits. Also would be an edge over all other forums, for ease of use, a real draw for users to come back again.