Primary and Secondary Links not displaying correctly

I recently installed Drupal (wow, a lot of fun and a well designed CMS!) and ran into the following issue:

The Primary and Secondary Links are not displaying correctly.

The specific issue is that only the last one in the list appears. e.g. When I added 5 links to "Primary Links", only the last one would appear. When I deleted the last link, only the 4th would appear. This applies to Secondary Links as well. I have tried switching between a couple different themes and the issue is the same on each. You can see the issue here:

http://www.biblical-history.com/drupal

So, what did I goof up :opps: Thanks for your assistance :D

Ps- I would like to say "thanks" to all the people who created Drupal. I have tried quite a few CMS applications and have come away dissappointed each time. In my week long test of Drupal I have come away impressed. The program is user friendly, has clean code, has good documentation, and a lively community. Drupal is a great balance of a robust application with hundreds (!) of great user created add-ons to serve a huge spectrum of needs. I very, very impressed. The navigation/menu system, especially, is well convieved and works wonderfully.