JWS Desktop shortcut fails to update after JNLP change in 1.6.0 update 18

Has anyone else noticed the desktop shortcut fail to update after a change to the JNLP with the latest Java 1.6.0 update 18 release?
Here are the steps we've found to replicate the issue on Windows XP, Vista, and Windows 7 using both IE and Firefox:
1) Download a JWS application and allow the desktop link to be created
2) Inspect the desktop shortcut and notice the path to the JNLP cache entry
3) Modify the JNLP at the server
4) Run the application via the desktop link - at this point the application will download updates and execute without issues.
5) Close the application - upon close, JWS will remove the old JNLP cache entry if the JNLP contained the security/all-permissions directive
6) Inspect the desktop shortcut again - notice that the path to the JNLP cache entry will remain unchanged
7) Launch the application again using the desktop link - JWS will fail with a cache exception if the JNLP contained the security/all-permissions element or will just run from the old JNLP
I've submitted a bug but just wanted to confirm that others are encountering the same issue.
Thanks,
Troy

Thanks for confirming.
This issue seems to continually creep into the Java releases. In the 1.6.0 releases, the issue is resolved in update 7 through update 11. Update 12, 13, and 14 all had various JNLP issues but I did find this specific issue with update 14. It was fixed again in update 15 and remained fixed through update 17.
I submitted two bugs and provided a simple sample application on our production site to use for testing with a url to update the last modified time. If bug is accepted, I'll post it here for others to vote for a fix.

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I have a problem that doesn't happen to all users of our application. We have our application launch via Java Web Start. We have a JNLP file that is dynamically generated for each of our customers. Once the application is installed they receive updates for the existing jar files that are listed in the JNLP file. The problem happens when we update the JNLP file "href" and "resources" to point to a different location which has the newer version of our application. It seems some people update to the latest version and others don't. This is with the same version of the JRE installed of different machines within a local network.
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800837 wrote:
..I thought you could update the codebase value to anything you wanted as long as the "href" stays the same it treats it as the same application.To quote these two sentences from my last reply..
the JWS client would use the cached version of the codebase and href to navigate back to the version on the server. If the href has changed, that will make it a different URL (for the updated JNLP) that the JWS client will never see.If you change the term 'href' for 'codebase' in the 2nd sentence, it is still a trues and valid statement, with the same effect. The URL changes, and the JWS client considers them separate apps.
Note that I was not entirely clear when you were discussing getting different responses from the server - how you were testing that. If it was via launching the app. from the desktop/menu item shortcuts I would be very surprised. If OTOH it was directly from the server the result would not be either surprising nor useful.
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