Okay, I don't think anyone has really pointed this out before, so here goes.. I have noticed that Almost none of Worpdress Themes are XHTML or even HTML Compliant for that matter due to silly problems with the coding or lack of headers or something. I hope you admins do look into this matter... Cause the link which claims the theme to be XHTML Complaint definitely isn't.
One more thing.. It would be nice if in many of the themes, the sub-categories were displayed below the main categories after a tab, like a ul within a ul.