CUPS: address already in use?

[Dimitri Maziuk <dmaziuk@yola.bmrb.wisc.edu>]

Hi all,
I finally got to setting up printers properly, added the necessary
magic to /etc/cups/cupsd.conf, and now cups won't start:
...
I [02/Aug/2001:15:44:05 -0600] LoadPPDs: Read //etc/cups/ppds.dat...
E [02/Aug/2001:15:44:08 -0600] StartListening() Unable to bind socket - Address already in use.

I tried it with several port numbers. There's nothing in lsof -i :631.
There's nothing about ipp/631 in inetd.conf, either.
Cups is cupsys 1.1.4-3, testing.
Anyone knows WTF is going on here?

Dima
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