The top three links here http://arenblogs.com/arenlor/ don't seem to be working in Firefox, but they work fine in Opera. I'm completly confused as to why this situation has come up, as the page validates and those links aren't any different than the other links. Anyone have any idea what is causing this? Should I file a bug with Mozilla maybe?

The top 3 don't' work because #wrapper is essentially covering them up. Put a big enough left margin on #wrapper to clear the nav and your links will work.

Thank you that put me on the lead to what it was, I had meant for #wrapper to go around both navigation and content.