If you follow the tutorial for monitoring external jobs as described on the wiki using the 1.368 version of Hudson, you will get back a reply "http://user:pw@myserver.acme.org/path/to/hudson/ is not Hudson (OK)" and the job will not start. Rolling back to 1.367 fixes the problem.

> set HUDSON_HOME=http://user:pw@myserver.acme.org/path/to/hudson/
> java jar \path\to\WEB-INF\lib\hudson-core*.jar "job name" cmd.exe /c <program arg1 arg2...>
>
> http://user:pw@myserver.acme.org/path/to/hudson/ is not Hudson (OK)

Verified on Windows XP and Windows 7, with or without Tomcat 6.0.29. Using Java 6 Update 21. Untested on other platforms.