Quoting Micah Anderson <mi...@riseup.net>:
any case I might have had some issues because my MySQL database needed to be optimized, but I was not able to determine how and now I just run one of the spamd's without bayes, which is not too bad because my bayes database seems to be totally worthless at the moment. :P
http://dev.mysql.com/doc/refman/5.0/en/optimize-table.htmlI have a cronjob set up that does an optimize table on all the SA tables every 24 hours to make sure everything is in line.