Cannot connect to localhost:631

[AG <computing.account@googlemail.com>]

On Wheezy, I have lost the capability of connecting to the CUPS server 
via the web-page using localhost:631.  The error message is "cannot 
connect: connection to the server refused".

I have double-checked /etc/hosts and that seems fine, checking the Net 
for help throws up suggestions on changing a setting in cupsd.conf but 
the only cupsd.conf file I can find on my system is a binary file in 
/var/sbin.  I also tried system-config-printer but that didn't help.

I have restarted the CUPS server and can print okay ... just cannot 
connect to the server.

Anything else that I can try?

Cheers

AG