I'm running a Linux build master, with a Windows XP slave, and the Hudson job
that runs on the slave always hangs.

I'm running the slave from the command line, not as a service. I use a shortcut
as follows:
%SystemRoot%\system32\cmd.exe /K "java -Xmx1024m -jar slave.jar -jnlpUrl
http://buildmaster:8080/computer/WinXP_slave/slave-agent.jnlp"

If I look at the running (but going nowhere) job from Hudson, and click on
"console output", the last line is
[junit] Tests run: 211, Failures: 0, Errors: 2, Time elapsed: 73.967 sec

And it just sits there forever. This is from an ant script, with the latest
Hudson (1.290), but the same problem occurred on 1.289 and 1.285.

Thread dump given in next entry.