The design is very messy, for example on top you have the banner all the way across he screen, however the bottom is only aligned to the size of the content.
The alignment is buggered up as well. "Your Filters" box doesn't line up with the boxes below and why on earth do you want to be able to Print Your Filters?
, the update button is also in the middle of nowhere.
The "Signup Arrow" arrow is not center in the surrounding circle.
The menus are not consistent, for example the help menu. there is a big gap between the "General FAQ" and "Ask a question". Also "Ask a question" has no rollover as all the other items do.
The preview box bellow should span the whole content space not just a a bit of it (should be the same as the box bellow that tells you to read the question carefully).
The box that I am writing this comment in is too wide for the grey box bellow. and it doesn't line up correctly at all.
The content buttons above look plain ugly, more issues then there is space on your server to list.
So in summery, if it was a two year old who designed this, its a really good job. However if this was done by someone who has been in the industry for a while, then you really need to think about getting a new designer.
Even the login input boxes aren't the same look or size. Tab indexes are stuffed up as well on the "Not a Member" side of the ugly thing bellow.
BTW you can't log using those boxes. you have to log in using the button at the top.