On June 2, Google confirmed that there are indexing issues in Google Search that are causing some stale search results. Google said “we’re currently experiencing indexing issues that may cause stale search results in some cases.”
On the morning of the 2nd, Barry Schwartz reported on his personal blog that google appeared to be having indexing issues. New content wasn’t shown for large publishers that the New York Times and Wall Street Journal, and other small publishers as well.
Google is working on a fix and hopefully these issues won’t happen again in the future.
As of June 3, Google said that the issue was finally resolved.