Last modified: 2013-12-15 12:17:50 UTC
ATM, the IPN listener is leaving msgs in the paypal_pending queue in ActiveMQ. The messages can eventually fill up all of the available memory, making it possible to add more messages to the queue. When this happens, PayPal donations do not get recorded in CiviCRM
This is resolved in r62 (wikimedia/trunk)
[Moving from "CiviCRM/General" to "Wikimedia/CiviCRM; see bug 57738]