See http://code.google.com/p/protobuf/issues/detail?id=46

Description of problem:
Python binding of protobuf 2.0.2 broken on import, quoted from the Google bug:

import google.protobuf.descriptor_pb2

What is the expected output? What do you see instead?

There should be no output on a successful import of this code, but instead
this error occurs:

Python 2.6 (r26:66721, Oct  2 2008, 11:35:03) [MSC v.1500 32 bit (Intel)]
on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> import google.protobuf.descriptor_pb2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "...\lib\site-packages\google\protobuf\descriptor_pb2.py", line 737,
in <module>
    class FileDescriptorSet(message.Message):
  File "...\lib\site-packages\google\protobuf\reflection.py", line 141, in
__init__
    superclass.__init__(cls, name, bases, dictionary)
TypeError: Error when calling the metaclass bases
    type.__init__() takes 1 or 3 arguments



Version-Release number of selected component (if applicable):
protobuf-2.0.2-8.fc11

How reproducible:
Always

How to fix:
Update to protobuf-2.0.3 or later