The offlineimap package in Fedora 11 is somehow broken. It does not really match the python version installed and produces a lot of deprecated warnings, at least one concerning SSL and one concerning md5 library:
/usr/lib/python2.6/site-packages/offlineimap/folder/Maildir.py:23: DeprecationWarning: the md5 module is deprecated; use hashlib instead import os.path, os, re, time, socket, md5