I was a Sprint Customer running a Treo 700wx with GMS 2.0.1 without any problems. I recently had to change to a Motorola Q running on Alltel's network. Both of these devices run Windows Mobile 5 though now I use the smartphone install versus the pocket PC. For some reason , it appears to drain battery heavily on the Q as well as I keep getting the error, the device does not exist on the server, your next sync will be like your first. I have deleted my GW mobile account as well as done a full reset of the Q also but I still get the same thing. Any one else experience this ?