It's about a regression problem, observed when running particular Applets in IE and using latest Java plugins like 1.4.2_07 or 1.5.0_02.

A testcase including sources has been added to this change request.

How to reproduce the problem:
- unzip the TestCase.zip
- install a particular JRE (see prolem matrix)
- load test.html in your browser (see problem matrix)
- There are three clickable objects on the test page
- Click on the link called "Collect Input"
  Moving your mouse pointer about the applet panel displayed
  should result in the progress bar updating from 0 to 100% before the
  panel disappears. The 1st link always works.
- Click on the 2nd or 3rd button
  The window pops up, but nothing else happens anymore if you use IE
  and any newer JRE (see problem matrix)
  
It is a regression bug, introduced in 1.4.2_07 and 1.5.0_01, because the problem only appears when using Internet Explorer and latest JREs. The problem can't be detected with Mozilla-based browsers, like Firefox OR when using older JREs and IE. See the problem matrix for more information.

Problem matrix, tests have been made on Windows 2000 SP4:
JRE IE 6.0.2800.1106 Firefox 1.0
--------------------------------------------
1.4.2_06 ok ok
1.4.2_07 problem ok
1.4.2_09* problem ok

1.5.0 ok ok
1.5.0_01 problem ok
1.5.0_02 problem ok

*java full version "1.4.2_09-nb-20050323"

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