How often G cache your site is very important.

[livePR.ezer.com]

Even some of web sites dropped to PR0

I suggest guys to watch site's cache time by " cache: your site "

If the the cache time is still changed very often then I think G still like your site very much .

ex: Yahoo.com msn.com get G cache every 1~2 days
normally regular sites have G cache around every 3~8 days

If your site get G cache time is still stay at one month ago then it might a danger message.
perhaps the site has duplicate, link problems or others.

May the thought helps your site before it may fall away from G.

[harsha22]

Yes. Caching time is very imp. Some of the sites which are regualrly updated, it caches very fast.

[janhvizdak]

Good point . My primary site is cached every 1-2 days .

BTW, you can use google sitemaps in order to see how often G visits your site(s).

[Eire-Web Design]

very true. Few of my websites are cached once a month but some are doing a lot better as twice a week.

[wayzee]

yes i agree with your point it needs urgent attention