Switched out the usb cord, replaced SD card and Rpi. Clocked at 600 and changed pools. BTC Guild so far 1 Day 10 hrs. Up time. Knock on wood the baby is now behaving, pool reports speed between 415 and 485 GHS.
I also replaced my Pi, power adapter and USB cable and it seems to have solved my instability issues so far. I have
3 days of uptime now (only one miner reset that automatically recovered) vs. the 24h hard reset issues I had previously. I have not been able to narrow it down to a specific component but I think replacing the rinky-dink 1A microUSB power adapter with a more solid 2A version did the trick.
