Hi, I added a fake token for testing, and I am seeing this in the logs: Processing [MismatchSenderId] error code from GCM response, for registration ID: [APA91bGVJjnqOASDasFAFDSFASDSFADFSDAAFSDFDSmU5NyLGOsiumWyN62BjE8FCVvYscnKzZrokIYadsadsasADas_s45cUnxdJEVrBokHX5k0fewfoV2JD17GUx5s5] I was guessing that we do remove these tokens, but no... IMO this should be fixed that, no ? -Matthias -- Matthias Wessendorf blog: http://matthiaswessendorf.wordpress.com/ sessions: http://www.slideshare.net/mwessendorf twitter: http://twitter.com/mwessendorf