note mpeters Ok, I've tracked down the problem to Regexp::Common. I've changed places in the code that used to have: <blockquote><code> use Regexp::Common; </code></blockquote> to instead <blockquote><code> use Regexp::Common qw(number); </code></blockquote> Which should actually reduce memory usage as well. And the reason that my <code>Carp/$SIG{__WARN__}</code> trick didn't work was because this was a place in the test suite that generated code and executed it in another process (with a fresh new perl). Thanks for all the suggestions. <!-- Node text goes above. Div tags should contain sig only --> <div class="pmsig"><div class="pmsig-377463"> <br>-- <i>More people are killed every year by pigs than by sharks, which shows you how good we are at evaluating risk.</i> -- Bruce Schneier </div></div> 795489 795495