Comment: I went for something a little cleaner than before, I think the dark colour made it a bit too dingy. I'm quite happy with this. Perhaps a tidying of the link icon may be in order, but that's a small thing to do.
Made the navigation area a bit more defined. Added an image of my mechnet design to the header to relate it more to the website's subject. I moved the star in the top right a bit to make it a bit larger and more defined. The link icon has been moved to help with alignment.