I have Microsoft Office 2007. Sometimes it works, at least the first time I use it after i start my computer. The next time I click on Word or Excel, it opens to a blank screen. The toolbars do appear at the top of the screen. If I click ANYWHERE on the screen or the commands a blue bar appears at the top of the screen which reads "Document 1 - Microsoft Word" and I get the hourglass. If I do nothing but wait that hourglass just stays on the screen forever. the only way out of this is to click the 'X' in the upper right hand corner. Then I get the message "This program is not responding". I click "End Now" and get the "choose to end nonresponding program, etc, etc This is very frustrating and time consuming. Sometimes rebooting my computer corrects the problem, sometimes not.