Remote destination "my_printer" has timed out; deleting it...

Dear All,

With cups 1.1.17, I have a machine setup to poll a print server for printers.

On restaring cups, the priunters are found and added (all printed nicely in the 
log file) but after the brose timeout, they all get deleted.

Here are my browsing options:

Browsing On
BrowseShortNames Yes
BrowseInterval 0 
BrowsePoll capprint.ee.ic.ac.uk



Any ideas what might be happening?  I have other machines set uop in this way 
with this print server and it works fine. 


Regards,

Paul