Erik just fixed the tracker so that the Assigned-to person gets email for any message added to an issue. However, *no* email is sent if one merely changes the Assigned-to field. Sending a message for every status change would cause significant amounts of spam, so mere status changes are performed "silently". So if you assign an issue to somebody but yourself, you should leave a message also so that this person actually learns about the assignment. Doing so is probably a good idea, anyway, as you should explain why you did this assignment. Regards, Martin