Adverts removed from the top and below the navigation bar on the left, banner slightly reorganised, and the centre column made wider as it was annoyingly small. It doesn't quite line up properly on the right, but it looks much better than it did. It resizes well, and when the window's made too narrow, the right hand column goes below the centre one.

(I also recommend userstyles.org - don't resize screenshots for anyone else who wants to see the screenshots below fullsize.)

*UPDATE Feb 12th * Orange background on updates extended to the width of the centre column.