Just now I was checking the warranty of my iMac and iPhone to add their Applecare expiration dates to my iCal, and I noticed that my iPhone Applecare was extended by itself. Back in December the Apple store replaced my iPhone because it wouldn't recognize clicks I made from my iPhone headphones. When I check my SN on Apples support page, it says that the warranty is valid until December 2010 (that's 2 years after the day it got replaced). It's like I got extended Applecare from the day I got my replacement phone. Anyone else ever have this happen to them?