The qtreactor test has been failing for several weeks: something in the Application testcase either hangs or goes into an infinite loop. This was slowing down the buildbot quite a bit (it waits 20 minutes before killing off a stuck child process, but there are cases where sub-children are not killed, and for this case the 100% CPU usage persisted after the test suite was terminated, slowing everything else on the system down). I've removed the qtreactor test case from the 'reactors' build until we can resolve the problem. Would someone who knows QT try './bin/trial -v -r qtreactor twisted.test' and see where it hangs? And fix the problem? :) Let me know when it's behaving again and I'll add it back to the buildbot. thanks, -Brian