On my servers (a pretty typical configuration) each subdomain is in a directory below the public_html of the root domain. A CGI in the subdomain has its DOCUMENT_ROOT as it own root directory. So it would not have any issues on my systems, but it is possible that some setups would.

Personally I would change your approach so that the systemname.cfv had a unique name for each sub-domain thus they would not clash with each other. I would also be inclined to save it in the same directory as the CGI itself, or in a directory off the document root.

Although it is not a Perl application, the techniques used in MySQL's Eventum event manager ( a PHP application ) are worthy of study. It does pretty much what youare doing.

jdtoronto