Last year when I bought my iMac it came with Snow Leopard installed, and the Snow Leopard installation disc, but I have had it running Lion since the day Lion was released, which I bought through the App Store. I am in the process of resetting my Mac back to factory settings, but I have just realised that Lion is attached to my Apple ID as it was bought through the App Store. Is there any way for me to hand it over to him as a new Lion device? Will the fact that it is attached to my Apple ID become a problem for him in the future? Thanks for any advice!