Hi all! I bought a laptop and it came with a free win7upgrade voucher, which i ordered. Today it arrived and the CD is labeled "Windows 7 upgrade media kit". I actually installed this on my Mac Mini in bootcamp without any problems just to test it. But I accidentally activated it in bootcamp before I could upgrade my laptop. Now it says the key is already in use on my laptop. But i then tried to activate by phone and it actually worked... And now both my machines are activated!, Will this cause any problems? Maybe i should uninstall my Windows 7 on my Mac Mini and use Daz's loader. So anyone know how does this actually work? how does Microsoft check? maybe when i perform updates on both machines?