FULL PRODUCT VERSION :
java 6 release candidate 1

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

A DESCRIPTION OF THE PROBLEM :
My JNLP file contains the following tags:

      <offline-allowed/>
      <shortcut online="true">
         <desktop/>
      </shortcut>

However, if I am offline, launching the application from the desktop icon results in an error message of the form:

com.sun.deploy.net.FailedDownloadException: Unable to load resource:...(name of my jar file)

whereas if I launch the application 'offline' from the Cache Viewer, it works successfully whether I am actually online or not.

I was able to launch the application offline from the desktop icon using Java 1.5.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Create a web start application.
Include the above tags.
Download the application using Java 6 RC.
Disconnect from the server hosting the application.
Try to launch the application offline using the desktop icon.

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
An attempt to launch the application online, followed by a timeout and the application being launched offline.
ACTUAL -
An error message saying that a resource could not be loaded.

ERROR MESSAGES/STACK TRACES THAT OCCUR :
com.sun.deploy.net.FailedDownloadException: Unable to load resource:...(name of my jar file)

REPRODUCIBILITY :
This bug can be reproduced always.