I'll post this again since my original is now missing... For weeks my Obi would reboot randomly, usually a few times a week. Also, the web interface would become slow and unusable. This was using the 2774 firmware. I downgraded to 2744 and it had been up for over 30 days. The version I am using is missing the GV message waiting fix, but I can deal with that to have reliable phone service.
I am using GV on SP1 and Anveo for e911 on SP2. I have seen other posts with this same issue, but no real resolution and the current firmware has been posted since January.
