I received an email from the fine folks over at the Alacra Blog asking Is Google [site:] command broken? I did my own tests and it seemed fine when I tested it, but they had proof, an image with the results showing external sites, domain names, for a search conducted at Google.com, using the site: command properly.
At first, I thought it was just possibly his computer, maybe some weird spyware, but now I see it was more wide spread.
A WebmasterWorld thread accounts for the same thing by a dozen other users.
The thing is, the problem seems to be have lingering since September 6th and as you can see the thread is still getting activity and the blog post with the image, was posted on the 10th. So there seems to be sporadic issues, the linger, with the Google site command.
Forum discussion at WebmasterWorld.