I'm in FL using a 202 that was working first thing this morning, then stopped working after a computer reboot. I don't know if they are tied together or just coincidental timing. Both my Google voice numbers show Backing Off :
Authentication error
My dad lives down the street and is using my old 110, his is still working fine. FWIW, he has not rebooted his computer recently. I've asked him not to until this issue seems to be straightened out, just in case.
I know the rebooting of the computer is very unlikely to be related, as both obis are connected to our routers, but thought I'd throw that out there. I don't really see a way that could be affecting a google authentication error on two different google voice accounts.
I'm still within the tech support period for my 202, so I submitted a help ticket, referencing how widespread this seems to be according to this forum.