I would say the one thing letting this site down design wize is the header, I would make it alot smaller. (smaller nav bar, no need for those huge bars.) I think if you can make it 40% smaller and fill the gap between the adds and the logo. Maybe put the add in the middle.
I hold an optimistic attitudethat when I come back next time ,it will become a little smaller.
In my opinion I think the size is much better. Since upgrading to 3.6.4 there are still some problems with some functions and I will hopefully get David to address these on here and WebHostingChat.
The header looks pretty fine in its size right now. I certainly have no problems viewing it. But hey, I'm a noobie, I just joined recently. The header looks fine.
You could still make it look better by reducing the gaps between the horizontal tabs. That way the site could be better viewed in any monitor and would not require users to scroll much.