so my content does not hug the bottom of the window browser?
Doesn’t hug it here! Do you want to centre it vertically? - if so then Page Action - Vertical Alignment is your friend.
Your content size (the important one to fit most screens) of 940 x 724 looks absolutely fine in Safari and IE 8
In Safari 5 and FF your menu doesn’t fit right across and Recent Projects is split over 2 lines in FF - you might want to insert your menu in a full width div with your bg applied to it and make the menu items a touch wider.