importing pyethereum messes up with standard logging

[palkeo]

Standard, expected behavior:

import logging
logger = logging.getLogger('test')
logging.basicConfig(level=logging.DEBUG)
logger.debug('hi')
DEBUG:test:hi

Now I do the same, but I import pyethereum before:

import logging
from ethereum import vm
logger = logging.getLogger('test')
logging.basicConfig(level=logging.DEBUG)
logger.debug('hi')

Nothing is printed.

That's an unexpected side effect (and pretty hard to debug when I depended on pyethereum very indirectly).
Can you only do that kind of change where pyethereum is used directly as a standalone executable, but not when it's imported?

(also, what' the purpose of having a custom "slogging" module? that's unclear to me)

Thanks,
palkeo.