It's stalls initially when loading the forumhome template (this is on broadband), but the other pages load fast.
The color scheme may need a little work, since there isn't any contrasting colors to catch the eye (and for a programming site, if it's a "gray is good" (achromatic) type, all tints/tones/shades of gray would just do). Complementary color of green is red/Split-Complementary are red-orange and red-violet/Triadic are orange and violet, for color harmony suggestions.
I personally use white/orange/gold/yellow colors with dark green backgrounds, since it can be read easier (btw, the bottom links are difficult to pick out, as they're too dark).
Considering the demographic, and that the smallest default resolution on XP is 800x600, you might like to increase the width to at least to 1024x768. It'll help prevent the fishbowl effect with those with 19" monitors at 1280x1024 and higher (a bane of fixed sized sites).
Overall the design is good, and the only thing that it needs on the graphic side (besides the usual logo and such) is a better color scheme.
Good job neithertheless!
CKL