Yesterday Google released Google Earth for download. Today, it looks like they closed it down for a bit. If you go to the Google Earth Download page it reads "Google Earth downloads temporarily delayed". I first spotted this at Google Blogoscoped but it looks like WebmasterWorld forum picked up on it on page 6 of the "Google Earth" thread there. I also took the liberty to update the thread at DigitalPoint Forums with the news.
Lucky, if you have not yet downloaded, a WebmasterWorld member posted a copy of the download here. I assume they pulled the download because it was being used too much and they need to upgrade a few things before releasing it on such a wide-scale again. Oh, Google Earth is damn cool by the way. I just wish driving directions from New York to London worked. :)