Below is an error, caused by a form in my Rails application:
Processing UsersController#update (for **ip** at 2010-07-29 10:52:27) [PUT]
Parameters: {"commit"=>"Update", "action"=>"update", "_method"=>"put", "authenticity_token"=>"ysiDvO5s7qhJQrnlSR2+f8jF1gxdB7T9I2ydxpRlSSk=", **more parameters**}
ActionController::InvalidAuthenticityToken (ActionController::InvalidAuthenticityToken):
This happens for every non-get request and, as you see, authenticity_token is there.
Problem solved by downgrading to 2.3.5 from 2.3.8. (as well as infamous ‘You are being redirected.’ issue)