Ok. I have three D1's, and now I have a friend with a D1, and he has a very closely related issue. Randomly, when someone calls him and he answers, the phone will answer in speakerphone, blowing his ears off. None of my phones have had this problem, and this is the first time that I've seen this. We tried rebooting, and we also tried a battery pull. When it boots back up, it will answer fine, but after a random amount of time (usually a day or two), it reverts back to answering on speakerphone. Any ideas would be greatly appreciated.