Nice site, I'm a big fan of clean layouts. Lately I'm leaning towards using lighter colors for contrast even though I've used dark colors in many a guild web pages. I also run my pages thru and optimization site like
Web Site Optimization: Speed Up Your Site website optimization web speed optimize web site performance company to see if there are any red flags.
The only other thing I can note is that I would put some navigation links in the forum page at the header other then that looking really good!