CUPS access problems

[Nudge]

I installed cups as directed in the Gentoo printing guide and defined my printers (using kde control centre). However when ever I attempted print a test page with the cups browser interface I got the error

You are not authorised to access the resource on that server

or something to that affect

I looked at the cups access log and noticed that when I attempted to print the test page the request came from occitan (the host name) rather than localhost.

I fixed this by changing the cupsd.conf file from

BrowseAllow 127.0.0.1
Allow From 127.0.0.1

to

BrowseAllow @LOCAL
Allow From @LOCAL

However being security paranoid (and just curious as to why it was not working) I would like to know why it happened and is there another way to fix it.