JRE b12 bug
I opened a run Java time bug with b11 on 02/17/2008 that has not made it into the official bug list as of 02/27/2008. The bug had an internal review ID of 1179397. Below is what happens when I test the runtime version with b12.
Java Plug-in 1.6.0_10-ea
Using JRE version 1.6.0_10-ea Java HotSpot(TM) Client VM
Below is a version test web site. See what your own b12 tells you.