After upgrading to SA 3.1.0 PLESK 7.5.4: 1. You cannot use PLESK to restart psa-spamassassin or it SA dies. 2. psa-spamassassin quits periodically, need to use a cron job to keep spam filter running. 3. spam filter training does not work anymore. After selecting the email to specify as spam or not spam, the page is returned with no email listed on it and the spam database stats are reset to 0,0,0 4. If you do not toggle spamassassin off/on for each email address then emails will go missing and are not delivered.