There's no word yet on what exactly is causing it, but various Google Chrome users are reporting that searches from the omnibox / address bar that go nowhere. While the instant results appear properly, once the user hits enter they're sent to a blank.html page that's just that, blank. There's a Google Groups thread 116 posts long of people noticing the issue going back a few hours and we're seeing it on our end also. In the thread, users suggest going into the settings menu, selecting "Manage Search Engines", adding a new search engine with the url http://www.google.com/search?q=%s (it can be named anything)
