Looks clean to me. The only thing that is inconsistent is the bottom black box. Although I do like the slanted roof look, it just doesn't quite go with the rest of the design. Everything else is clean and symmetrical, and then that... Maybe put the login box on the left and put a slanted roof on it going the other direction. Ahh, that sucks... But still... Something to even it out a little, or just put curved corners on the stuff on the bottom.