At times the servers or technician will determine that a batch or quorum of tasks (work units) is redundant or bad. In those cases the system is instructed to prepare an action message for the client. When the client contacts the servers, at least once per 3 days, the message is transmitted and the relevant task(s) will be aborted: * when not yet started, and * even when started if it is known to crash at any rate. knreed posted several articles to identify these conditions that will terminate a job when using BOINC version 5.10 and up: [Sep 19, 2007 2:17:19 PM] [Jun 21, 2007 7:46:08 PM]