I take it back, sorry, #2 is bogus, I found /etc/cron.daily/amavisd-new. I don't know why you have cron jobs for amavis split up between the two files, but I was wrong.
Here's some suggested text for README.Debian --- README.Debian 2006-02-01 11:25:44.091776702 -0800 +++ README.Debian 2006-02-01 11:28:17.371093963 -0800 @@ -51,8 +51,9 @@ amavis group. If you use spamassassin with the Bayes database system, you should make sure -that the spamassassin configuration option "bayes_auto_expire" is set in -spamassassin configure files. +that the spamassassin configuration option "bayes_auto_expire 0" to disable +automatic expiration of tokens is set in spamassassin configure files. A +cron job is run daily to expire them by hand. Debugging -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]