Mmm, looks a bit messed up in IE and FF. In IE, the navlinks don't match up with the lines (personally, I don't like that layout in any case). Also, in both browsers, the last post column doesn't extend far enough to the right. The space between the blue headers (eg: for category names) and the actual content makes them seem like they're not actually meant to be together.

So critical, yeah something is really messed up with the style, I'm going to bed but I'll fix it soon.

Not much on it now, exams all week so can't work on it too much. Skin acts up sometimes, if anyone knows a fix...