commons-validator ebuild sets jar library twice in the classpath OUTPUT java-config --classpath=commons-validator /usr/share/commons-validator/lib/commons-validator-1.0.2.jar:/usr/share/commons-validator/lib/commons-validator-1.0.2.jar
Not sure why this is happening, most likely a java-pkg bug. I'll look at this later ;)
Fixed in portage now, thanks.