J2SE Version (please include all output from java -version flag):
  java version "1.6.0-ea"
  Java(TM) 2 Runtime Environment, Standard Edition (build 1.6.0-ea-b50)
  Java HotSpot(TM) Client VM (build 1.6.0-ea-b50, mixed mode)

Does this problem occur on J2SE 1.3, 1.4.x or 1.5? Yes / No (pick one)
  Yes

Bug Description:

  If the a html page include a SCRIPT tag and the content is not hidding
  with a comment then JEditorPane will parse the content of the SCRIPT
  tag. Because all available browsers can handle the SCRIPT tag since
  multiple years, many user does not use the commnet tag inside the
  SCRIPT tag. The parsing of the SCRIPT content will produce random
  exceptions.

  browser works fine with 2 attached html file, but not java.