New black bar

I’m sure there’s an easy fix for this, but I can’t find it. I hope somebody here can help me. (And I hope I posted this in the right place. If not, my apologies.)

Since upgrading to 2.0, a black bar appears at the top of my single post pages (or comment pages). ( http://lynndaniels.com/blog/2006/01/01/celebrate/ ) I don’t remember this bar being there before the upgrade.

I did a search and saw where people were having this problem when they had the Subscribe2 plugin activated, but I don’t have that plugin. Only two of the plugins I have activated are not listed on the compatibility page, and I’ve tried turning both of those off with no results.

Any ideas on what might be causing it?

Lynn