Clone detection can give false warnings if a user connects and then signs
off several times in rapid succession.

Clone detection also goes off wrongly if a server links and has a number of
clients from the same hostname.

Services is known to crash VERY rarely on a client QUIT.  A debug log
duplicating this would be very much appreciated.

/msg OperServ RESTART / kill -HUP don't work sometimes.  SHUTDOWN /
kill -TERM still work in this case.
