I see you've widened the main copy, definately the right choice.
You could tighten it up more by decreasing the width of your site. It's currently well over 1000px. It's recommended you go no higher than 960 width to accomodate people who use a smaller res.
You might have to rejig your layout a bit or resize some of the images on the homepage, but it's worth it making the site more usable for a lot of people that still use 1024 x 768.