Google crawling, but no more indexing new pages

[casafree]

Hello all,

We have a 9 years old website wich is excepting some indexing problems in Google the last couple of weeks.

The probleme is that google is no more indexing our internal pages, the bots are always present in our website, and the home page is getting updated in the cache every 30 minutes. most of the new links to the new internal pages are in the home page, and google is crawling them.
But for some misterious reasons, its stoped indexing theme.

We are also present in the google news section, the news crawled and indexed in the Google news pages, but are not showing in google web search.

here is an example of this bug :
In one keyword search, a certain internal page is not present

but when adding site:example.com command to those same keywords, the page is present in the first position

Thank you for any suggestion or idea that could help us resolving this probleme.

Greetings from Morocco.

PS 1 : Our sitemaps are submited to Google, and no error is reported.
PS2 : Please excuse my broken english.

[edited by: tedster at 5:29 pm (utc) on Mar. 2, 2009]

[tedster]

If the page is present in a site: operator search, then it is indexed. It is just not ranking in the regular keyword search. Google will only show two pages (at most) from any one domain on a keyword search. In this case it sounds like Google has decided that other pages on your site should rank higher for this search.