Hello.I suggest the following two langtools fixes be backported from JDK 7 to OpenJDK 6:
6507024 java/compiler: unchecked conversion between arrays fails after capture conversion
http://hg.openjdk.java.net/jdk7/jdk7/langtools/rev/6e9a43815df76999460 java/compiler: Glassfish build with JDK 6 / 7 is 5x-10x slower on Windows than on Linux
http://hg.openjdk.java.net/jdk7/jdk7/langtools/rev/a8d3eed8e247 Fixes for these two bugs are already in the proprietary 6 update train. -Joe