Nightly: Applet fails to load under some scenarios and incomplete trace O/P on Java console

Under some scenarios applet fails to load and loads fine when browser is refreshed or page is reloaded. ALos Java console O/P is incomplete i.e. following info(Java console help and JRE/VM info) is missing from the Java console :
Java Plug-in 1.6.0_10-beta
Using JRE version 1.6.0_10-beta Java HotSpot(TM) Client VM
User home directory = D:\Documents and Settings\Administrator

----------------------------------------------------
c: clear console window
: finalize objects on finalization queue
g: garbage collect
h: display this help message
l: dump classloader list
m: print memory usage
o: trigger logging
q: hide console
r: reload policy configuration
s: dump system and deployment properties
t: dump thread list
v: dump thread stack
x: clear classloader cache
0-5: set trace level to <n>
----------------------------------------------------

This info appears only if one presses "Clear" on the Java Console

Steps to reproduce
-------------------
1)Try loading the following applets inside the browser
http://sqeweb.sfbay.sun.com/deployment2/jitu/plug-bug/runtimeArgs/TestUntrustedSecure1.html
 If signed applet fails to show up then bug is reproduced
 - Look a the Java console o/ps
     - One Java console is totally empty
    - Second Java Console has above mentioned info missing
2) Press relaod . Security pop-up should be there and applet is getting started
Above mentioned info is still missing from the Java console
3) Press "Clear" on the Java Console , above mentioned info appears