Google indexing problems

pages sometimes not cached

[SlyOldDog]

Anyone else having probles with pages coming and going from the index? Since the latest update my index page and a few other important pages went missing.

Now they are back, but all the foreign language pages are gone (17 languages!).

The telltale sign is first a very old cached date (say 12 days). Later the page loses it's cache and finally it drops from the index.

Pretty frustrating. It's obviously a glitch. Any ideas?