Comment 9 for bug 1097203

For anyone watching this space, greenlet fix was backported to Fedora18/17:
* Fri Jan 18 2013 Pádraig Brady <email address hidden> - 0.3.1-12
- Fix base exception type thrown

 http://pkgs.fedoraproject.org/cgit/python-greenlet.git/commit/?h=f18&id=a9feed2c525dda14317bd49f4da6d435aeeaf16c