The SEC has expressed concerns about "various issues with respect to our public filings, including our provision for interim period effective," Google said in its filing. The dispute has been batted back and forth seven times between Google and the SEC, most recently on January 30.
In this most recent filing, Google admitted that the two sides are at an impasse. "We have not resolved the comment," Google said in the filing. "We believe that we properly account for our income taxes. We will continue to work to resolve these comments with the SEC."