Desc:
 Firefox browser hang and doesn't respond when demo applets are loaded/executed.
 It has been found with FF 3.5.1 or higher.
 It also happens with FF 3.5.0 and all OK with FF 3.0 ( I tried 3.0.11 ),
 but with lesser probability - the issue is not 100% reproducible.
 Hanging also happens with FF 2.0.0.16.

 It started to happen since 5u21 b03 rev j4b, all OK with 5u21 b02 rev j4b.
 It also happens in 5u22 since b04 rev j4b, all OK with 5u22 b03 fcs j4b.

 There is no such issue with IE browser.
 There is no such issue on Unix with FF 3.5.X

 And finally: it doesn't happen if JConsole is ON ( !! ) for all failed cases.
 If Jconsole is ON, applet loaded/executed OK and JConsole is shown.

 There are no such issues with latest 1.4.2_24 b08 rev j4b and 1.6.0_17 b08 rev j4b.