On Apr 26, 2011, at 6:21 AM, Albert Brandl wrote:

I might be wrong, but this looks like a bug to me. Maybe I didn't
understand how to use this class, though...

I haven't investigated too thoroughly, but it sounds like you have, and this does indeed sound like a bug.  Could you write it up (<http://twistedmatrix.com/trac/newticket>), so it doesn't get lost?