MOTD debian - is this ever changed by an update?

Is this ever changed automatically by a system update?

I'm just wondering as I set a 'hilarious' one for a personal server off rackspace cloud, and it seems to have been deleted.

From serverfault Kevin Sedgley

• See /etc/init.d/bootlogs

  Specifically this line

  # Update motd
  uname -snrvm > /var/run/motd
  [ -f /etc/motd.tail ] && cat /etc/motd.tail >> /var/run/motd
  

  Meaning you should put your changes to motd in /etc/motd.tail otherwise its going to get overwritten on boot.

  From Adam Gibbins