FULL PRODUCT VERSION :
java version "1.6.0_13"
Java(TM) SE Runtime Environment (build 1.6.0_13-b03)
Java HotSpot(TM) Client VM (build 11.3-b02, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

A DESCRIPTION OF THE PROBLEM :
Our JNLP files that specify the j2se version as 1.4.2_13 fail to load in the new Java-PlugIn under 1.6.0_13 (our jar file was compiled with 1.4.2_13). If we set the version to 1.6 the files load without any problem. If we drop back to 1.6.0_12 the files also run just fine.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a JNLP file that sets the j2se version to 1.4.2_13

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
That the JNLP file would load and execute as normal.
ACTUAL -
The Java-PlugIn begins to start and then disappears.

REPRODUCIBILITY :
This bug can be reproduced always.

Release Regression From : 6u12
The above release value was the last known release where this
bug was not reproducible. Since then there has been a regression.