Skin = nice; header = not
I don't like the far left swoopy thing at all. It looks...I dunno. I also don't like the arrows - too many sites using arrows, they're just a way to let you know what you're looking at, not design elements IMO. Also, the green alienware-esque comp shouldn't be in a logo for an HTML forum. Something more code-oriented is called for IMO. Otherwise colors = nice, and the rest of the skin infact is pretty good. But the header turned me off to even viewing a thread.
[added]
And it loaded no slower than most vB forums for me, about 35secs. Content loaded fast enough, that's all that mattered.