From: <glassfish_at_javadesktop.org>
Date: Fri, 06 Mar 2009 09:17:00 PST

To answer my own post: a couple more hours of googling showed that the problem is with a utility called Airfoil, in particular it's "Instant Hijack" component. I was apparently running an old version, that was buggy. For a description of the problem, see

http://www​.rogueamoe​ba.com/utm​/2008/03/1​9/security​-update-20​08-002-com​patibility​-fix/

Udating to the newest version fixed the crashes.
[Message sent by forum member 'tmaeder' (tmaeder)]

http://forums.java.net/jive/thread.jspa?messageID=335563