1.001 - Tue Oct 21 14:03:25 BST 2003
    - added README and Changes
    - changed default pidfile to /var/run or $tmpdir
1.002 - Thu Jan 15 17:00:44 GMT 2004
    - minor POD changes, and fixed test that was checking for exit status
1.003 - Thu Apr  1 11:35:38 BST 2004
    - 1 char change to POD talk about minimal release!
1.004 - Mon Jun 21 13:26:31 BST 2004
    - use Proc::ProcessTable instead of kill 0
1.004 - Wed Sep 27 10:29:30 BST 2006
    - added pidfile to "already running" message