I've had my OBI100 for over a year, using GV with no problems. Anticipating the loss of GV, I switched to PhonePower which I configured on SP2, made it the default for outgoing calls and left GV on SP1. It worked immediately - BUT about once every two days, the phone stops working. If I dial out, I get a "service not configured" message. Rebooting the OBI fixes the problem. I deleted GV on SP1, in case that was somehow the issue, but that had no effect.
Any ideas? I didn't change anything other than the provider, but the phone has gone from very reliable to flakey.