I have done a clean download of twisted and run the tests without any changes. I still get the same error on:-- twisted.names.test.test_tap.OptionsTests.test_recursiveConfiguration [ERROR] Traceback (most recent call last): Failure: twisted.trial.util.DirtyReactorAggregateError: Reactor was unclean. DelayedCalls: (set twisted.internet.base.DelayedCall.debug = True to debug) <DelayedCall 0x4507698 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('d.root-servers.net', <Deferred at 0x4507c88>)> <DelayedCall 0x450cd28 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('l.root-servers.net', <Deferred at 0x450ce68>)> <DelayedCall 0x873e878 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('e.root-servers.net', <Deferred at 0x873e058>)> <DelayedCall 0x873e580 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('f.root-servers.net', <Deferred at 0x873e6e8>)> <DelayedCall 0x43d8350 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('h.root-servers.net', <Deferred at 0x43d86e8>)> <DelayedCall 0x450cf08 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('m.root-servers.net', <Deferred at 0x450cd78>)> <DelayedCall 0x4507d28 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('a.root-servers.net', <Deferred at 0x4507cb0>)> <DelayedCall 0x4507620 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('b.root-servers.net', <Deferred at 0x4507328>)> <DelayedCall 0x45074e0 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('c.root-servers.net', <Deferred at 0x45072b0>)> <DelayedCall 0x43d8c10 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('g.root-servers.net', <Deferred at 0x873e8f0>)> <DelayedCall 0x43d82b0 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('i.root-servers.net', <Deferred at 0x43d8800>)> <DelayedCall 0x43d8558 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('j.root-servers.net', <Deferred at 0x43d8508>)> <DelayedCall 0x43d0378 [60.0s] called=0 cancelled=0 ThreadedResolver._cleanup('k.root-servers.net', <Deferred at 0x43d83c8>)> twisted.names.test.test_tap.OptionsTests.test_recursiveConfiguration ------------------------------------------------------------------------------- Ran 11183 tests in 109.669s FAILED (skips=2945, errors=1, successes=8237) -- *John Aherne* *www.rocs.co.uk <http://www.rocs.co.uk>* 020 7223 7567