When running the "mb" tool on Ubuntu 9.04, the SQLObject Python module spits out a 
deprecation warning each time it is run:


> /usr/lib/python2.6/dist-packages/sqlobject/converters.py:165:
> DeprecationWarning: the sets module is deprecated
>   from sets import Set, ImmutableSet


The depracation warning is in the sqlobject module and is issued when Python 2.6 is 
used, which is the default Python on Ubuntu 9.04. We might get rid of it by filing a bug 
for the python-sqlobject package, or by using Python 2.5 instead.