Google docs down

Since few hours am trying to get a document from Google Docs for a print out; and after login all it says is “The server encountered an error. Please try again later.undefined”. So, looks like the doc server is down.

But I can see the listing of all my folders and count of all files from the left pane. And I can even navigate to the folder and view and edit all files..wondering why they have a problem in the first place ?

Here is the screen shot of the error.