Due to performance issues, I had to clean out everyone’s spamassassin learning (bayes) database and migrate it to a new server. As a result all spamassassin training has been reset and you may notice more spam making it into your mailbox.
If you would like help re-training, I have made a quick and dirty page in the wiki on how to train spamassassin: http://www.gustavus.edu/gts/Training_spamassassin