We used Hudson for nightly builds since the first day of JVx. The hudson server was an internal server, so the reports were "private". We have never liked it!

Since 1 May are the reports now publicly available. Check it out:

https://dev.sibvisions.com/jvx.nightly/

You see the JUnit test reports, Checkstyle reports, Code Coverage reports and FindBugs reports.
And we now use Jenkins instead of Hudson