Actually, this bug is much less likely to occur than the description indicates because the second unsub attempt will only throw the exception if the user has a list admin authentication cookie. If the user had originally authenticated only as the user, the second attempt will fail for lack of authentication. But I fixed it anyway before realizing this. ** Changed in: mailman Status: In Progress => Fix Committed -- You received this bug notification because you are a member of Mailman Coders, which is subscribed to GNU Mailman. https://bugs.launchpad.net/bugs/1390653 Title: If a user is unsubscribed after retrieving her options page and before submitting an unsub, an uncaught exception is thrown To manage notifications about this bug go to: https://bugs.launchpad.net/mailman/+bug/1390653/+subscriptions