How to disable Browsing between 2 servers completely?

[Ralf Schade]

Hi all.

First: cups 1.3.11 on RHEL5-U5 (cups built with rpmbuild -ta)

Have I missed (once again) something?

I want to completely disable printer advertising between 2 servers on 
the same subnet, but I find a lot of browsing packet error messages in 
/var/log/cups/access_log...
On machine with ip 10.18.44.104:
10.18.44.105 - "GET /printers/LSINPUT_PLT?waitjob=false HTTP/1.1" 404 0
Tons of those messages...

in /var/log/cups/error_log comes:
cupsdAcceptClient: 9 from 10.18.44.105:631 (IPv4)
cupsdReadClient: 9 GET /printers/LSINPUT_REF?waitjob=false.ppd HTTP/1.1
cupsdAuthorize: No authentication data provided.
cupsdSendError: 9 code=404 (Not Found)
cupsdCloseClient: 9

These are the settings of both machines:
BrowseProtocols none
ImplicitClasses Off
Browsing Off

DefaultShared yes
Listen localmachine.ip:631
Listen 127.0.0.1:631
BrowseInterval 0
BrowseTimeout 30
BrowseAllow from none

Isn't this enough? Is there anything else to do?

Thx in advance

Ralf