I have a Product which uses ZPsycoPG (and thus psycopg), currently running on 3 systems. On two of them I never see this, but on the third I get intermittent errors of the nature: "Interface Error: already closed". These errors strike pretty much from any area that access the DB, and "solving" the issue seems as simple as hitting the back button and trying again (and I'm currently using the standard_error_message to fire these back to a more user friendly page explaining this). It would be nice to make these simply go away though :) I've seen a few references here and there that such errors might be related to firewalls/proxying, and the affected host definitely is in such an environment, but I don't know that I buy that this is what is going on. Is anyone familiar with this problem, and if so, any ideas as to where to look? Thanks -J