FULL PRODUCT VERSION :
java version "1.6.0_19"
Java(TM) SE Runtime Environment (build 1.6.0_19-b04)
Java HotSpot(TM) 64-Bit Server VM (build 16.2-b04, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
all operation systems with the latest java 6_19

A DESCRIPTION OF THE PROBLEM :
Our application loads unsigned classes from jars in a different thread then the awt thread. Then the new JavaWebstart Mixed code Security dialog wants to show itself but that hangs our complete setup

stackdump where you can see the 2 AWT event threads (AWT-EventQueue-0 and AWT-EventQueue-1) some how being blocked.
and the pool-1-thread-1 thread is just waiting for an answer for its dialog.
(attached seperatly)



STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
you could try our test server:

http://test-servoy-02.servoy.com:9090/servoy-client/servoy_client.jnlp



EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
That i can just click on No or Yes in that dialog
ACTUAL -
Can click on anything, the security dialog seems to be hidden by another modal dialog that isnt there.


REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
The only work around is by going to the java control panel and disable the mixed code verification completely..

But this is not really a option for all our deployments of our customers.
So for now the only real work around is NOT to install Java 1.6_19

SUPPORT :
YES

Release Regression From : 6u18
The above release value was the last known release where this
bug was not reproducible. Since then there has been a regression.