Okay, so twisted has a bunch of reactors. But, most of them aren't being tested. Currently being tested: Linux: select, poll, gtk, gtk2 OSX: select, cf Windows: select, win32event Currently untested platform/reactor combos that ought to work: Linux: glib2, qt, wx OSX: kq, qt, wx Windows: win32event, gtk, gtk2, glib2, qt, wx glib2reactor is really gtk2reactor, so, while it might be nice to test, it probably isn't very important, and the linux reactors test already takes a long time. However qtreactor really should be tested. Currently, cfreactor and IOCP reactor both seem to be in a state of very-brokenness. Itamar tells me wxreactor is also broken, but I have no knowledge of that. GTK and GTK2 reactors have some failures on BB, but I don't think they're in very bad shape really. Windows default reactor also currently has some failures, but I seem to recall it working right in the recent past (besides not being able to spawn processes). So: I propose removing cfreactor from OSX bb, removing IOCP from windows bb, adding win32eventreactor to windows bb, and qtreactor to linux bb. The reactors that we know are totally broken (As far as I know, the list is: IOCP, cf, wx) should be marked as such with warnings, and excluded from the release of twisted 2.0. James