Upgrade Note
An update to my previous upgrade note. I run postfix as my default mail server. During the upgrade I uninstalled the package as recommended until I was done upgrading the OS. While I was in single user mode most of the time, when I eventually brought the system back up, sendmail started as the default mail server. This wouldn't be a problem if I had ever configured sendmail to work on my system. Alas I never did and as a result all sorts of mail related things broke. Most notably mail to neophi.com bounced since it didn't match the FQDN. Blah.
Lesson learned, either 1) upgrade postfix while still in single user mode, 2) configure the default sendmail files, or 3) block port 25 while you are in a state of flux. Thankfully sendmail logged who send the bounced messages, so I was able to contact those people and have them send the message again.