Why would a kill -2 not work?

Peter Steele psteele at maxiscale.com
Mon May 18 16:23:28 UTC 2009

Under what circumstances might a "kill -2 nnn" not work. I have a Python app with a signal handler configured to catch INT signals. It seems to work fine, but we've recently noticed that after the app has run for a while the kill -2 no longer works. This seems pretty suspicious, perhaps indicating our app is misbehaving in some way. What might cause the signal handler to stop working? 

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