With hudson (several versions, including 1.149), we have several jobs containing
a single maven2 module. These are built with the maven2 goals "clean deploy".
Most of the times, hudson will finish the build and deploy the artifacts even if
there are test failures or other failures in the build. (Some failures stops the
build, though).

This is very serious, as the very purpose of using a CI system like hudson is to
prevent versions not compliant with the test suite to be deployed and made
available. Now we have no idea whether or not deployed versions are functional.