Cookies can be tricky because dark forces outside of the CGI::Cookie can be at work. You mention that your server got reconfigured, check that it have a proper DNS entry. Are you trying to test from a server behind a firewall??

Here is a quote right out of CGI:Cookie 1.18

# IE requires the path and domain to be present for some reason.
  $path   ||= "/";
  # however, this breaks networks which use host tables without fully 
+qualified
  # names, so we comment it out.
  #    $domain = CGI::virtual_host()    unless defined $domain;
[download]

Also try using raw_fetch instead of fetch.

Another thing you can try is using IP number instead of domain name while testing this should get around any DNS/Host table gotcha's

Good luck.

mitd-Made in the Dark
'My favourite colour appears to be grey.'