Homepage PageRank falls from 6 to 0 - rest of pages normal

[HostingDirectory]

I just noticed that my homepage is showing a while pagerank 0.
It used to be a pagerank 6 and has many good quality websites linking to it.
I also notice that cache is not showing in Google for the homepage.
All other pages seem to be fine and are showing pagerank and the site still lists the same in Google for key searches.
I see no reason why i should be penalised as the site has had nothing changed in a while and is respectable hosting directory.

Should i be worried or is this somekind of error?

Any advice appreciated.

[tedster]

I believe that pagerank is balanced between the unique content of the site vs the outbound / inbound links...

PageRank has nothing to do with content. Really.

This thread was about one oddity on one site - so I think we should take all the rest of the PR changes discussion over to one thread, so our discussion is all in one place.

Google Page Rank Updated [webmasterworld.com]