*points out problems*
1600x1200 seems to mirror the image twice, fix this by limiting forums width.
Advertising your sites url in each tcat isint really needed, I would replace that with a nice graphic instead.
The background image is almost to much for me, it makes me want to yell at the screen
I offer you my services to clean up the template some, free of course

but as for graphics you should try something easy on the eyes (and bandwidth).
*points out likes*
Stats box is nice, colors are a bit plain but at least you did not go for pure black, I hate pure black.