So... I'm putting XP Pro SP2 on my laptop (a clean install on a blank drive), which previously came with an OEM copy of XP Home (and a load of other stuff I don't want). I had previously installed this (full retail) copy of XP on a desktop, but that machine has long since been out of commission. Still, it had been activated so I expected I would have to talk to a Microsoft tech person on the phone to explain that the desktop this copy was associated with wasn't being used any longer and no longer had an active copy of XP. Strangely, when I went to activate my copy of XP... it just activated. No "hey, waitaminutehere, this copy has been activated once!" or anything. I expected many things to come from this installation, but a smooth activation wasn't one of them. Is there a length of time put on activations, or was this just a fluke? I used the same CD, same product key, all that stuff. I'm not complaining by any means, but I was curious if that has ever happened to anyone else, or if there is a reason for it I'm unaware of.