Thunderbird prompting me to login, and getting "Google does not recognize this email address" as a reply was a nice adrenaline spike, until I checked the status on HN!
This happened to me with a work email. For a moment I thought, "Well, I had a good run at this company.." My next thought was, "Ha, Google must be down - better check HackerNews."
I am still experiencing this problem on all my synced-to-Thunderbird Gmail accounts, so it either hasn't been completely fixed yet, or there's another ongoing issue.
