Default page size in shared printers

[Fabio]

Hi all,

I succeeded in sharing my printer over my network. 
There is only one thing which doesn't work properly: the shared printer
gets loaded on the client with letter as default paper size, regardless 
that on the server its default is A4.
To be more precise, in the ppd for the served printer I get:

# cat /etc/cups/ppd/epson.ppd | egrep -i "default.*(letter|a4)"
*DefaultPageSize: A4
*DefaultPageRegion: A4
*DefaultImageableArea: A4
*DefaultPaperDimension: A4

I have read on a previous post on this newsgroup that the locale may
concern the settings chosen by cups: both on the server and on the client
I get

# echo $LC_ALL
it_IT.UTF-8

so, in principle, this should go toward a4.

What should I do to have the client recognize the default paper 
size of the server?

My environment is:

server: ubuntu 8.04 + cups 1.3.7
client: xandros for eeepc900 + cups 1.2.7

and the (relevant part of) cupsd.conf looks like

Port 631
Browsing On
BrowseOrder allow,deny
BrowseAllow all
BrowseAddress @LOCAL
DefaultAuthType Basic
<Location />
  Allow From @LOCAL
  Order allow,deny
  Allow @LOCAL
</Location>

Thanks a lot for your attention

Fabio