The site itself looks fine, although it has some flaws that I would like to point out.
This layout would do horrible in a screen reader, most table based layouts do. The more important things aren't presented first as this isn't possible with tables. I recommend to recreate your layout using layers and CSS, you'll find that it's much easier to work with in the long run for maintaining it.
Also in Opera the login form is centered, but in IE it's left justified. I'm not sure which one it's suppose to be, but you might want to check that out.
Also all the RSS, Atom, etc together look really bad. You can probably just have the latest version of RSS as most RSS users keep pretty upto date. For Atom why not make the orange area a different color? I would also recommend to make them all match your website and have a little more spacing between them, they look crunched up together.
That's pretty much it. Overall your website looks pretty good, but if you want to get percise then take my comments.
