Hi there We're using Zope 2.6.1 with the low conflict connection patch applied to TemporayFolder mentioned in http://mail.zope.org/pipermail/zope-dev/2003-March/019081.html and collector issue #848. I noticed that Zope 2.6.2b3 already has this patch applied. Unfortunately our error log is still rife with SESSION KeyErrors. We have a number of functional tests that test our app over HTTP that we run a couple of times a day and 4 out of 5 times we have to start all over because of session key errors. The error still occurs in "get" in Transience.py which seems to be same as what is mentioned in collector issue #848. File /usr/local/zope/Zope-2.6.2b3-src/lib/python/Products/Sessions/SessionDataManager.py, line 93, in getSessionData (Object: session_data_manager) File /usr/local/zope/Zope-2.6.2b3-src/lib/python/Products/Sessions/SessionDataManager.py, line 180, in _getSessionDataObject (Object: session_data_manager) File /usr/local/zope/Zope-2.6.2b3-src/lib/python/Products/Transience/Transience.py, line 175, in new_or_existing (Object: session_data) File /usr/local/zope/Zope-2.6.2b3-src/lib/python/Products/Transience/Transience.py, line 807, in get (Object: session_data) KeyError: 1057558960 Any idea when this will be fixed? -- Roché Compaan Upfront Systems http://www.upfrontsystems.co.za