http://build.squeak.org/job/SqueakTrunk/574/console shows a typical
failure in CI at the moment. The relevant output is:

2013-10-30T22:17:00.132+01:00: Running tests for Tests...
!!! Killed command 0 for exceeding allotted time: nice
/home/jenkins/workspace/SqueakTrunk/target/cog.r2776/coglinux/bin/squeak
-vm-sound-null -vm-display-null
"/home/jenkins/workspace/SqueakTrunk/target/PostTestTrunkImage.image"
../tests.st.
/home/jenkins/workspace/SqueakTrunk/benchmarks.st
spawning command 1 with timeout 600 seconds: nice
/home/jenkins/workspace/SqueakTrunk/target/cog.r2776/coglinux/bin/squeak
-vm-sound-null -vm-display-null
"/home/jenkins/workspace/SqueakTrunk/target/PostTestTrunkImage.image"
../benchmarks.st

2013-10-30T23:01:41.404+01:00: Running tests for ToolBuilder-Kernel...

Note that the "!!!" line happens because the running of the full test
suite took OVER 40 MINUTES. My crummy little laptop chewed through the
test suite in 10 minutes.

So: on Windows 8 I cannot reproduce the problem. Would someone with a
Linux machine please try run the full suite of tests? I strongly
suspect we have a dialog popping up, but only on Linux.

(I'm busy working through Pavel's DummyUIManager. I suspect that I'll
be copying most of it into my CommandLineUIManager, for submission to
trunk. Hopefully I'll get to it in the very near future.)

frank