Network printing difficulties

[Robert Hesketh]

I have 2 Linux PCs (Gentoo)

Both have cups installed version 1.1.23-r1

I have an Epson Stylus Color 760 installed via USB on PC #1, 192.168.0.1
PC#2 is on 192.168.0.3
They are networked together via an ADSL router.

I can print to the printer from PC#1 perfectly.

PC#2 has some very odd behaviour:

KDE apps (eg Kate, Konqueror) print perfectly.
Non KDE apps, eg. Firefox, OpenOffice, GIMP require root to print (i.e. won't print as a user).

Users are the same on both PCs, and users are a member of the lp group on both PCs. I've fought with this for many weeks, and the behaviour hasn't changed since PC#1 had to be completely replaced with a new one (and obviously fresh Gentoo install).

KDE apps can even print from PC#2 if cups isn't running on PC#2

PC#1 cupsd.conf:

LogLevel info
TempDir /var/spool/cups/tmp
Port 631

BrowseAddress @LOCAL
BrowseDeny All
BrowseAllow 127.0.0.1
BrowseAllow @LOCAL
BrowseOrder deny,allow

<Location />
Order Deny,Allow
Deny From All
Allow From 127.0.0.1
Allow From @LOCAL
</Location>

<Location /admin>
AuthType Basic
AuthClass System
Order Deny,Allow
Deny From All
Allow From 127.0.0.1
Allow From @LOCAL
</Location>

PC#2 cupsd.conf:

DocumentRoot /usr/share/cups/docs
LogLevel debug
Port 631

Browsing On
BrowseProtocols cups
BrowseAddress @LOCAL
BrowseShortNames Yes
BrowseAllow @LOCAL
BrowseOrder deny,allow

<Location />
Order Deny,Allow
Deny From All
Allow From 127.0.0.1
Allow From @LOCAL #previously said 192.168.0.*
</Location>

<Location /admin>
AuthType Basic
AuthClass System
Order Deny,Allow
Deny From All
Allow From 127.0.0.1
</Location>


PC#2 client.conf

ServerName 192.168.0.2