This bug is to follow up with 6694710. It appears the fix for 6694710 failed with jdk7 b126-pit
Tested build : b126 pit bundles
tested OS : windows xp
tested browser: FF3.6/IE8
Steps to reprodcue:
1)Install above mentioned PIT bundles
2) Load one applet, like:
3) Check the java tray icon. If it appears by default, bug is reproduced.