This is related to JENKINS-5315, it appears that while the maven site: site:deploy runs successfully in a freestyle project, the report collection fails.

I get the following in the logs
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESSFUL
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 88 minutes 25 seconds
[INFO] Finished at: Tue Jan 19 15:24:46 UTC 2010
[INFO] Final Memory: 138M/624M
[INFO] ------------------------------------------------------------------------
X connection to localhost:10.0 host broken (explicit kill or server shutdown)
Recording test results
Skipping Cobertura coverage report as build was not UNSTABLE or better ...
Notifying upstream projects of job completion

Information about my build:
My build looks like this:

• 1 parent reactor pom
• 57 modules in a mix of jar,war,ear and a assembly zip module
• Some of these modules have unittest
• Some of these modules contains antrun tasks needed for webservice (server and client),weblogic mbean,weblogic workshop frontend. most of these antruns are wrapped in a "if" task to avoid needless regenerations (like javac skipping compile of class files are up2date)

Post build plugins:

• HGCA changelog annotation
• Junit
• Checkstyle
• Findbugs
• Cobertura
• Emotional hudson

I have tried to do the build on just one of the modules at it works.
I have the Monitoring plugin runnings and there is no obvious red flags.

I will try to enable/disable the individual modules to see if things changes but the build takes 90minutes so it is a slow process.