Hi all, We've been using this patch in production for some weeks and testing for months: http://launchpadlibrarian.net/37237733/_zope_i18nmessageid_message.c.patch To resolve this bug: https://bugs.launchpad.net/zope3/+bug/257657 The patch seems to do what it claims and I've not noted any nasty side-effects thus far. However, before I commit it, I'd appreciate it if someone with knowledge of python C-extension fu had a look at it. I attempted to write a test for this, but my only idea (using weakref.ref) failed. If no-one objects, I'll probably just commit the patch anyway after some time. -- Brian Sutherland