Geocoding from App Engine servers results in 620

Is anyone else having this problem? Sometime last night after app engine's server maintenance, i have only succ开发者_如何学运维essfully been able to geocode a few addresses -- most responses are 620 errors. ive been running the same app with no problems for 3 months, so i think i think its a problem on google's end. one other person on the google groups discussion was able to confirm, but i want to be sure because im very skeptical given that more people arent complaining.

here's the explaination of the 620 status code.

"The given key has gone over the requests limit in the 24 hour period or has submitted too many requests in too short a period of time. If you're sending multiple requests in parallel or in a tight loop, use a timer or pause in your code to make sure you don't send the requests too quickly."

And a post on the subject.

Hope it help!