My 2¢ to tighten even more:
What if you make the "light" rows in the forums match the light areas of the logo, then the "dark" rows match the dark green (you'd then have to change some of the link colors)...
Add the "Rules" and "Photo Galleries" links to the nav bar and stick something else in that white space...
Center the bottom banner...
And if you can, put Forum Stats to the left of Who's Online...
That just my opinion, I could be wrong 
