Comment 2 for bug 324327

Ignore my previous comment about the translate() method, the problem is that there was an optimization made to the hmac module in Python 2.6 that had the seemlingly unintended effect that unicode strings are no longer accepted as input. I've filled a bug in the Python issue tracker (http://bugs.python.org/issue5285) but this "str() as input only" bug will still need handling in zope.session to work with Python 2.6.