I bought a copy of Office 2007 Pro from an online seller who advertised it as a genuine, new copy. It came in a sealed box with the hologram CDs and installed with no problems using the product key in the box. After downloading updates, I started getting the "not genuine" message after reboots. The seller insists that this is a legitimate licensed product which was purchased from a Circuit City store that was going out of business, and that the messages I'm getting are due to some problem with the installation, not with the authenticity of the software. I can force him to refund my money by having my credit card company or paypal stop the payment, but I've seen some posts in various places describing cases where genuine software got this OGA fake warning. I want to give him the benefit of the doubt. How do I determine what the truth is?