So according to the warranty info, upgrading your mini yourself will not void it, what it says is if you break anything while doing the upgrade, then it's your problem. Of course, that's pretty open to interpretation for Apple to deny warranty claims if they want to, so I'm asking for anyones experience with getting an upgraded mini covered. I have an upgraded hard drive in my late 09 mini, worked fine for months after the upgrade, so I can say with certainty the problem is not related. Lately, my dvd burner has been having problems, it will seem toburn a single layer dvd, but be unable to verify it at the end, and using the dvd will uncover errors. Dual layer dvds will not burn at all, I get an error about the burner being unable to set the power level for this type of media as soon as I try. So, anyone try getting warranty work with an upgraded mini?