Which OS and versionof Perl are you using? This doesn't seem to leak (with 5.10.1 & Vista): 

perl -Mthreads -E"sub x{sleep rand 100}; for(1..100){ threads->new( \&
+x, $_ )->detach }; sleep 1000"

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In reply to Re: Perl detached threads, loops & my? by BrowserUk
in thread Perl detached threads, loops & my? by expresspotato

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