Comment 72 for bug 1029289

Thanks a lot, David and Damiano! Your cases seem to be different:

@Damiano: it looks like there is some application which asks to authenticate with Google using the plain password method, and that's what generating the error. In fact, from your logs I can see that the OAuth authentication went on successfully at 13:22:16 and at 13:22:54, but then at 13:23:00 the "password" method was used. Since you can reproduce the bug fairly easily, could you please try disabling evolution from the Online Accounts panel, logout and then in again? If you could try that for contacts, mail and calendar one at a time this would help us find the issue (I'd bet it's the calendar).
Anyway, when you click on the account to reauthenticate, does it directly show a form with username and password, or does it send you to the Google website?

@David: I know this is quite annoying, but do you think you can disable the Facebook and the MSN/Live accounts and try again? Since they all authenticate at the same time, and using the same method (Oauth), it's impossible to follow the logs. :-(
Also, how often does this happen?