WordPress Misc. Issues I need help on… Please!

I currently run and operate The Galley Boys and have a few issues i need solved and wanted to see if you could possibly help me.

Site is not viewing properly in firefox and IE. in firefox it is putting the rss bar under my sidebar when it should be down low. Also in IE it doesnt show my full sidebar, just one ad for some reason.

When you click on the topic of a post it tends to take you sometime to an error page that is http://thegalleyboys.comcategory/

On the site Above “Visit Our Sponsors” there is a little white line that extends out and i need to rid that.

Thanks, and talk to you soon
Ryan