PR0 continues.... 5 months and counting!

Getting a little discouraged with Google, although i'm happy with my site and it's content:

Site is 10 months old and after 6 weeks was PR3. About 2 months later i went to PR0, lost all my backlinks, and have stayed with a white toolbar ever since! SERPS are still 'ok', although near the beginning i was in the top 5 for many keywords and now i'm generally in the 10-15 range (or non-existant for a few).

I have a clean site that is bot friendly, am listed in DMOZ, have a few high PR sites with links on them (although as discussed they don't show up via Google), will soon be listed in Google Directory (according to one of the Directory Datacenters), and have MUCH more content than many of the higher ranking SERPs for a variety of keywords.

What gives?

MY SITE

Any suggestions are welcomed.