site:example.com shows nothing

banned or not

[sourso]

My site is 3 years old and there were about 10.000 pages indexed in google. Today something happened and tottally disappeared from google (all datacenters).

link:example.com shows urls.
Pr is still 3 (all datacenters)
Still in the google directory with a pr 4 ( never be pr 4 before )

In google webmaster tools;

Home page crawl: Googlebot last successfully accessed your home page on Sep 21, 2007.

Index status: No pages from your site are currently included in Google's index. Indexing can take time. You may find it helpful to review our information for webmasters and webmaster guidelines. [?]

Everyday there is new unique content and I havent done any changes on the structure, pages etc. for 6 months except last week i added about 20 outgoing links (to wikipedia) in categories.

So i am really confused right now. Is this a ban?

[tedster]

Either a ban or a reporting bug. How is your traffic from Google? If it's a ban, then traffic would have also vanished.