Posted to java.net forums by 'matzon'
http://forums.java.net/jive/thread.jspa?messageID=250933


Occurs on 6u10 b08 and b09

java version "1.6.0_10-ea"
Java(TM) SE Runtime Environment (build 1.6.0_10-ea-b08)
Java HotSpot(TM) Client VM (build 1.6.0_10-ea-b08, mixed mode, sharing)

Running Windows XP, SP2 - 32bit


If you clear the cache in Java from the control panel, you can't uninstall any webstart applications. It tries to remove it - but the add/remove entry is never removed
Here is the informaiton provided by 'matzon' from

1: Clear cache - fresh start
2: visit http://lwjgl.org/jnlp/lwjgl-demo.php/examples.spaceinvaders.Game, play for a bit :)
3: Clear cache (Temporary Internet Files -> Settings -> Delete files)
4: Open Add/Remove Programs
5: Remove the LWJGL Demo [examples.spaceinvaders.Game] entry
6: Confirm deletion
7: Entry remains

Interresting output from trace:
basic: Uninstall: http://lwjgl.org/jnlp/lwjgl-demo.php/examples.spaceinvaders.Game
network: Cache entry not found [url: http://lwjgl.org/jnlp/lwjgl-demo.php/examples.spaceinvaders.Game, version: null]
network: Connecting http://lwjgl.org/jnlp/lwjgl-demo.php/examples.spaceinvaders.Game with proxy=DIRECT
network: ResponseCode for http://lwjgl.org/jnlp/lwjgl-demo.php/examples.spaceinvaders.Game : 200
network: Encoding for http://lwjgl.org/jnlp/lwjgl-demo.php/examples.spaceinvaders.Game : null
...
network: Cache entry not found [url: http://lwjgl.org/jnlp/lwjgl-demo.php/examples.spaceinvaders.Game, version: null]

-------------------------------------------------------------------------------------------
log file:


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  <message>basic: Java part started
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  <message>network: Browser is C:\PROGRA~1\MOZILL~1\FIREFOX.EXE -requestPending -osint -url "%1"
</message>
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  <date>2008-01-14T08:42:00</date>
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</message>
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  <date>2008-01-14T08:42:00</date>
  <millis>1200296520400</millis>
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  <date>2008-01-14T08:42:00</date>
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  <date>2008-01-14T08:42:00</date>
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  <date>2008-01-14T08:42:00</date>
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  <date>2008-01-14T08:42:00</date>
  <millis>1200296520400</millis>
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  <date>2008-01-14T08:42:00</date>
  <millis>1200296520400</millis>
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  <date>2008-01-14T08:42:00</date>
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</message>
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  <date>2008-01-14T08:42:00</date>
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</message>
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  <date>2008-01-14T08:42:00</date>
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  <date>2008-01-14T08:42:00</date>
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  <thread>10</thread>
  <message>security: property package.definition new value com.sun.javaws,com.sun.deploy,com.sun.jnlp,org.mozilla.jss
</message>
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  <date>2008-01-14T08:42:00</date>
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  <level>FINE</level>
  <class>com.sun.deploy.util.LoggerTraceListener</class>
  <method>print</method>
  <thread>10</thread>
  <message>basic: Uninstall: http://lwjgl.org/jnlp/lwjgl-demo.php/examples.spaceinvaders.Game
</message>
</record>
<record>
  <date>2008-01-14T08:42:00</date>
  <millis>1200296520400</millis>
  <sequence>40</sequence>
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  <level>FINE</level>
  <class>com.sun.deploy.util.LoggerTraceListener</class>
  <method>print</method>
  <thread>10</thread>
  <message>network: Cache entry not found [url: http://lwjgl.org/jnlp/lwjgl-demo.php/examples.spaceinvaders.Game, version: null]
</message>
</record>
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  <date>2008-01-14T08:42:00</date>
  <millis>1200296520400</millis>
  <sequence>41</sequence>
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  <level>FINE</level>
  <class>com.sun.deploy.util.LoggerTraceListener</class>
  <method>print</method>
  <thread>10</thread>
  <message>network: Connecting http://lwjgl.org/jnlp/lwjgl-demo.php/examples.spaceinvaders.Game with proxy=DIRECT
</message>
</record>
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  <date>2008-01-14T08:42:00</date>
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  <level>FINE</level>
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  <method>print</method>
  <thread>10</thread>
  <message>network: ResponseCode for http://lwjgl.org/jnlp/lwjgl-demo.php/examples.spaceinvaders.Game : 200
</message>
</r