All, As others have reported (e.g., http://www.nabble.com/AttachmentField-1.3.6,-PloneExFile-3.2.4-and-Plone -2.5-rc3-t1805380.html), Zope hangs in AttachmentField/PortalTransformsAttachment.py when accessing a PloneExFile object (see the attached thread traceback dump). One reported fix is to elide a call to AttachmentHandler.registerHandler(PortalTransformsAttachment) in PortalTransformsAttachment.py. In my case, I upgraded from AttachmentField version 1.3.10 to 1.3.11, which was sufficient to correct the deadlock. I'm currently running PloneExFile 3.2.4, AttachmentField 1.3.11 (was 1.3.10), Plone 2.5.1, CMF 1.6.2, Zope 2.9.6, Five 1.3.7, and Python 2.4.3 on FreeBSD/i386 6.1-RELEASE-p6, in case any of that is relevant. Best wishes, Matthew -- Every time Bruce Schneier smiles, an amateur cryptographer dies. (http://geekz.co.uk/schneierfacts/fact/55)