It seems fairly clear that this is a machine/OS/network configuration difference rather than anything at all to do with Perl. As such, this isn't the right place to be looking for answers. Mostly because unless you luck out and another monk has encountered the exact symptoms you are describing, and remembers a fix, the only way to remote diagnose the problem would be through an extended, way off topic, questions and answers thread.

You need to look for differences between the configurations of the two machines. Eg. Dump the registries for both and do a diff on them. You'll get crap loads of differences, but most of them should be easily determined as being irrelevant. Consentrate your efforts on those that aren't :)

Dump the ipconfig /all outputs and look for differences in the subnet masks, gateways and dns server setups.

If you are using different logon IDs on the machines, or they are in different network domains, look at the permissions etc.

Maybe that will give you some clues. Probably, your local network guy will track down the cause more quickly than you can.

Thanks for your efforts. We have, indeed, gotten off track. I have posted an ADDENDA to clarify a more Perl-ish motive to my post. Thanks again.