After 3 minutes for the main app covering in french:
App Engine Error
Over Quota
This Google App Engine application is temporarily over its serving
quota. Please try again later.
1 in 3 to 5 requests would still go through though.
Then 1 hour into the keynote:
We're sorry...
... but your query looks similar to automated requests from a computer
virus or spyware application. To protect our users, we can't process
your request right now.
We apologize for the inconvenience, and hope we'll see you again on
Google
So live-blogging on App Engine isn't quite cutting it yet.
The english version which had a much smaller audience kept running the
whole time with around 25 requests/s