If you are using PB code, you will start getting deprecation warnings when you upgrade to 1.0.7. This is due to switching to: 1. A new connection API that doesn't suck. 2. New cred support. #1 is documented in the 1.0.7 Howtos. #2 isn't. You can however see examples of how to do #2 in CVS, specifically these two files: http://cvs.twistedmatrix.com/cvs/doc/examples/pbecho.py?rev=1.9&content-type=text/vnd.viewcvs-markup http://cvs.twistedmatrix.com/cvs/doc/examples/pbechoclient.py?rev=1.10&content-type=text/vnd.viewcvs-markup and compare them to doc/examples/pbecho(client).py in 1.0.7 or older CVS versions. Some of Twisted's internal code doesn't use this new API either. By 1.1 all docs, examples and code in Twisted will have switched to the new API. The old API will of course continue to be supported for some time, but it is recommended you switch as the new API is much cleaner and better designed. -- Itamar Shtull-Trauring http://itamarst.org/ Available for Python & Twisted consulting