Also, what about just trying to stop a perl program by itself. Can you ^Z 
perl -pel

[download]
(thx to ikegami for the brevity advice). If this also fails, then the problem may be your build of perl. I noticed a gcc-related problem reported against netbsd and perl signal handling that could possibly be relevant...

In reply to Re: weird ctrl-z behaviour when piping from tin through perl by Illuminatus
in thread weird ctrl-z behaviour when piping from tin through perl by Anonymous Monk

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