I had a similarly mysterious, though possibly unrelated problem a while ago. As I recall, following chromatic's suggestion and switching to Devel::SmallProf allowed me to profile my code without the bug occurring. It might be worth trying this on your code and see if it aids you in locatin the problem.

Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail
"Memory, processor, disk in that order on the hardware side. Algorithm, algorithm, algorithm on the code side." - tachyon

In reply to Re: Techniques for isolating bugs in perl by BrowserUk
in thread Techniques for isolating bugs in perl by Ytrew

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