Hello Steve, > Can someone who is set up to do easily just do a timing of test_mailbox > under 2.6 and 3.2, to verify they see the same disparity as me? The test > takes about twice as long under 3.1 here On Ubuntu timing was: Python 2.6.5: 23.8sec Python 2.7rc2: 32.7sec Python 3.1.2: 32.3sec All the best, -- Miki