Recently switched back to openSUSE after a brief stint with Ubuntu. I guess you need to try other things out to know how good you have it, eh? Anyway, I'm playing with Leiningen and Quil, but for some reason or other, I could not get Leiningen to self-install, because of an exception:
java.security.KeyStoreException: problem accessing trust storejava.io.IOException: Invalid keystore format
It turns out that the java keystore is somehow corrupt on OpenJDK / openSUSE 12.3. Not sure who's at fault, but here's how to fix it.