As of 4.1-alt1, junit package doesn't contain a junit.jar file in /usr/share/java. According to jpackage policy, /usr/share/java/junit.jar must be a symlink to /usr/share/java/junit-4.1.jar. Many programs (including ant) add /usr/share/java/junit.jar to their CLASSPATH. Without it, they can't work. For example, ant package building is broken now. Adding a symlink make ant happy. I think many recent building problem in Java packages in Sisyphus can be solved that easy.
Thanks! Fixed, sent to incoming/ Where I can download java policy? Is it packaged?
Sisyphus Java policy in freezetime equals to jpackage policy. See jpackage-utils package in Sisyphus for current jpackage policy.