J2SE Version (please include all output from java -version flag):
1.6.0_19 and 1.6.0_20


Does this problem occur on J2SE 1.4.x or 5.0.x or 6.0? Yes / No (pick one)
No, only on 1.6.0_19 and 1.6.0_20

Operating System Configuration Information (be specific):
Linux (Ubuntu)


Bug Description:
The security box for mixed signed code we have under linux also with JNLP.
Under Windows we does not have the box. We have create different jnlp
files (attached) for signed and unsigned code. If I understand the JNLP
documentation this should not occur.

The next large problem is that the security box is behind our splach screen
(Most Top On Screen) which are started from the first signed jnlp file without
classes from other jnlp files. The behaviour for the customer is that it is
 hanging because the box is not visible.


Steps to Reproduce (be specific):
Start a JNLP application under Linux with signed and unsigned parts.
See the JNLP files