Spamassassin Not Using Bayesian Analysis

OS: 9.0 SA Version: 2.55 (from SuSE archive) I have ample ham and spam counts (6,000 spam, 38,000 ham) but SA is still not using Bayesian analysis. I did manually set use_bayes to 1 in /etc/mail/spamassassin/local.cf though it is supposed to be the default but still no luck (based on the X-Spam-Status tests= line(s) in the message headers). Aside: I managed to get bogofilter working and use it via procmail but that is after SA processing. Thank you, Lucky