I wouldn't have the pc icon the notice alert suffices imo. With regards to the colour scheme. I'm not a fan of blue, in particular the actual blue in the mockup I don't like, I'd personally use a myriad of colours rather than dominate the style with blues. Try getting some other colours in there to break the theme out a little giving it some character.
Menus are a nice touch. Nice work but get some colour in there.
I like the style in general, it looks refreshing CyberAP. There is one problem though... I've experienced some problems with themes (xenfocus.com themes to be excact) that lines up the user info (where the alerts are) with the navigation.
When you have several tabs that doesn't have space, they pushed the user info below which doesn't look so well. Last thing, insted of underline the links maybe try to put it in a square css box that would look better I belive.