both the systems on different locations & different service providers. No proxy. Both are firewall disabled!

• What's the main difference between systems one and two?
• You name something like an uplink speed. Is that a matter of hardware restrictions?
• Are the two hosts...
• set up alike?
• in the same location?
• using the same network router?
• in the same network segment using the same network switch?
• set up to use some kind of web or tcp service proxy?
• using the same set of firewalls using the same set of fw rules for both hosts?
• what else...?

If your Perl programme is using the same perl executable, the same set of modules and generally the same environment in both locations, then there are probably no issues related to Perl here. That explains the lack of interest of the Monks.

Issues may still be one of the following:

1. The network on your second site contains some firewall or proxy at your internet provider's site.
2. There may be some hidden proxy setting somewhere in the guts of your windows network configuration.
3. Both 1) and 2).

Depending of (no?) time and material available, I'd suggest to either

• ask your internet provider to tell you what you might be doing wrong.
• swap the machines and test.
  The result should be quite promising to tell us what's up.
• or better set up a copy of the machine that's working fine, put it in place of the one causing trouble. See what happens:
  • If that one works, compare differences in the set-up.
  • If it doesn't, start asking your internet provider.

Cheers, Sören