I agree that the bottom left column should line up with the links -- it throws off the structure -- you also 'flipped' the orange bar, that looks a little odd, throws your eyes off. The typography is a little weak, you've got kerning issues -- but overall I think it's a nice design -- looks very techy, but also very template style... so you have a trade. Good color usage and look, but it also looks like it's been done before. Either way, I like the image.
Did you design the graphical background for the blue and gray header? Looks like something I may have seen before, *cough*.
Are those really Microsoft buttons? I'm on a Mac, not sure, but if so -- yeah, that's bad, c'mon. How many people made liquid pill buttons from the mac on every website in the free world. Repeating issues is not good.
I like the look. I like the color scheme, I think it's nicely created, but it looks like it's a template build, with a lot of stuff taken from other sources and rebuilt.
It's common for designers to borrow and steal, that's our business -- but you take a good idea and 'make it better'. You take the look of someone's site and adjust it, rebuild it -- to the point it is their own. Case example, couldn't you take that little Microsoft house, redesign your own with the similiar style/shadow/etc.? It would be 'copying' an idea for inspiration, but the design would be your improvement. All artists do this, but they make it subtle.
I look forward to seeing it get built, I'd like to see how it turns out.