I had the same problem although I don't have Google Desktop installed. I have Windows 7 with a Student version of Office 2007 installed. I have uninstalled that version and installed Office Professional Plus 2007 and this is when the problem started. I have tried uninstalling and reinstalling it without success, the problem was still there. I searched google and didn't find a solution, then I uninstalled a Windows Update for Office compatibility that was installed automatically and THE PROBLEM WAS SOLVED!