SpamAssassin 2.60 requires the installation of DB_File for its Bayes filter.
Here's the problem I ran into when I compiled it. It happens during testing:
DB_File needs compatible versions of libdb & db.h
you have db.h version 4.0.14 and libdb version 2.4.14
The README file tells me that I'm pretty much screwed since I use perl 5.6.0 and it includes a version of the Berkeley DB which is going to make it hard for me to match up with db.h.
I give up on this installation and wait for the day when my local perl installation will be magically updated to 5.6.1 or later. In the meantime, my spamassassin will run without Bayes.