Links headers

I recently upgraded from 1.2.x to 1.5.1.3. Everything seems to be cool, except that the headers for my list of links are in a much larger font than expected.

My site is: http://blog.psychochild.org/

The links are on the right-hand column. The “pages” header seems fine, but the links section names are too big. (They should be the same size as the red section names on the right.)

My style.css file is at http://blog.psychochild.org/wp-content/themes/psychochild/style.css if that helps. This is virtually identical to the CSS file I had for my old blog format. I’m a CSS/PHP newbie, but I’m a programmer so I’ve been able to muddle through customizing my blog template.

Any help appreciated!