Thanks for your response.
I didn't make myself as clear as I should have. In my original post I meant I was using threads (but didn't want to because of their unreliability and processor + memory intensive consumption).
I then realized I might be able to use forks.pm and not have to change any of my threads code (plus I thought it might even be faster due to the speed of the system fork in linux). When I tried this is when I ran into several problems, one of which was the filehandle error. I slimmed it all down to one little script just to show that there was an issue with the forks.pm module and opening filehandles.
Thanks for all the help already given and for any future advice, about perl as well as site etiquette. :)
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