[Users] startup messages

[B Boc]

Hi,

When the server starts I get these two messages :

1. INFO: no fifo_db_url given - fifo DB commands disabled!
2. WARNING: fix_socket_list: could not rev. resolve 64.18.11.4

other postings on the mailing say don't worry about the 1st one.  cool.  
What's with the second one?  mysql db is local to server.

the server does  authenticate and store locations I just wnat to know what 
the messages mean/imply especialy the db one

thanks