I noticed SO, SF, SU, and here have a bit wider of a width for their fixed-width layout. Is it just me or did you just change this and why?
Looks like 80px maybe. That's based on the .article-summary div's on the front page. Used to be 650px, If I remember correctly, and are now 730px. Now at 960px total for the container - a move toward the 960 grid system? :)