Re^3: question about running a system and a perl function background

Yes. Install a newer version of perl that is configured and built with threads enabled. I would recommend that you get 5.8.4 or 5.8.5.

Examine what is said, not who speaks.

"But you should never overestimate the ingenuity of the sceptics to come up with a counter-argument." -Myles Allen
"Think for yourself!" - Abigail "Time is a poor substitute for thought"--theorbtwo "Efficiency is intelligent laziness." -David Dunham
"Memory, processor, disk in that order on the hardware side. Algorithm, algorithm, algorithm on the code side." - tachyon

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