So Here's what I've tried.

Reseting all refresh/recache buttons in ZenPhoto.

Reseting and throwing out all cache for Firefox.

Yet, this Mac I'm on and the PC downstairs when using Firefox - displays no album.
Is there a bug with Firefox? For this to happen on two different machines 1PC/1Mac seems very odd.

The album displays fine using Safari... go figure.

Hmmm.. help?

sorry, here's the photo page I'm having trouble with:

http://www.latinjazztrio.com/photos/

Probably you are logged in with Safari and that album is set to unpublished. Unpublished albums are visible to the logged in admin for checking purposes, but of course not for not logged in visitors.