In case anyone runs into the same problem, I was getting several-minute freezes using python-xmpp (xmpppy), even with a single line program "import xmpp" and nothing else, and this turned out to be the cause.
In case anyone runs into the same problem, I was getting several-minute freezes using python-xmpp (xmpppy), even with a single line program "import xmpp" and nothing else, and this turned out to be the cause.