I have tested it with Netscape and IE on Pc and Mac, and it doesn't work on any. Netscape says "document contains no data".
By changing to:
my $myuri = $query->self_url();
I still get the same problem. I prefer not to use it, since I only want to pass the one parameter if the cookie was not found.
Any more ideas would be welcomed. I am currently looking at the firewall, but don't see any obvious problems. the domain is exactly the same, there is only one domain name.