I cut and pasted your cgi and put it into my cgi-bin dir and added a link to my test page and it worked fine. So there is no problem with your cgi (Other than the message I get that it is too late for -T). Also your httpd.conf settings look fine.

You mentioned that you are using a hub..? Are you connecting to the url from the local machine or across a network..? Also Turn ZoneAlarm off for a bit while you are testing..?

Let us know what happens..