If you followed my advice in the past on getting Java 1.5 working on a Snow Leopard, then the new Apple update destroys that with the follow error for a Java 5 java -version:
Error occurred during initialization of VM
Unable to load native library: libjava.jnilib
Abort trap
I didn't track down the exact issue... however it is easy to detect that the Java update converts the symbolic links for Java 1.5 to point back to Java 6... Apparently Apple is NOT sorry for their crazy choice of ignorantly doing this in the first place. The solution is to completely go through the process out lined at OneSwarm again and re-establish the symbolic links. This will require you to delete the symbolic links that point to "CurrentJDK" for 1.4, 1.4.2, 1.5, and 1.5.0.
After edits an ls -l in the /System/Library/Frameworks/JavaVM.framework/Versions should look like:
drwxr-xr-x 15 root wheel 510 Dec 5 22:18 .
drwxr-xr-x 12 root wheel 408 Dec 5 22:15 ..
lrwxr-xr-x 1 root wheel 5 Dec 5 21:35 1.3 -> 1.3.1
drwxr-xr-x 3 root wheel 102 Jul 20 18:35 1.3.1
lrwxr-xr-x 1 root wheel 5 Dec 5 22:18 1.4 -> 1.4.2
lrwxr-xr-x 1 root wheel 14 Dec 5 22:18 1.4.2 -> 1.4.2-leopard/
drwxr-xr-x@ 9 root wheel 306 Feb 12 2009 1.4.2-leopard
lrwxr-xr-x 1 root wheel 5 Dec 5 22:01 1.5 -> 1.5.0
lrwxr-xr-x 1 root wheel 14 Dec 5 22:00 1.5.0 -> 1.5.0-leopard/
drwxr-xr-x@ 10 root wheel 340 Dec 5 21:59 1.5.0-leopard
lrwxr-xr-x 1 root wheel 5 Dec 5 21:35 1.6 -> 1.6.0
drwxr-xr-x 8 root wheel 272 Nov 8 14:35 1.6.0
drwxr-xr-x 9 root wheel 306 Dec 5 21:35 A
lrwxr-xr-x 1 root wheel 1 Dec 5 21:35 Current -> A
lrwxr-xr-x 1 root wheel 3 Dec 5 21:35 CurrentJDK -> 1.6
Happy coding!
