So, just upgraded to Oneiric and I find there are quite a lot of bugs... One of them is when I try to launch Minecraft and create a new game, it crashes. I get this error code.
This is a known bug with minecraft+ATI fglrx drivers, nothing you can do about it will solve this combination, not even Oracle's JRE, its not a Openjdk problem.
You have 2 options:
Recommend the 2nd one, gl.