Builds tested: JDK7-b123-PIT/JDK7-Dec14-NIghtly build

Test applets under ALC testsuite with legacy_lifecycle attribute are failing to load on doing a page relaod or page switch using PIt and Dec14 nightly build
Following excpetion is getting riased on doing the page reload or page switch
java.lang.IllegalStateException
at com.sun.deploy.uitoolkit.impl.awt.AWTAppletAdapter.setParentContainer(Unknown Source)
at sun.plugin2.applet.Plugin2Manager$AppletExecutionRunnable.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Exception: java.lang.IllegalStateException

Steps to reproduce:
1) Install any of the JRE bundle mentioned above
2) Try to load any of the following applet
http://sqeweb.sfbay.sun.com/deployment2/jitu/plug-bug/ALC/SimpleSwingTestLegacy.html
OR
http://sqeweb.sfbay.sun.com/deployment2/jitu/plug-bug/ALC/PrintThread1_legacy.html
3) Do a page reload
 or page switch using back or forward button or visit to some other page(oracle.com) and then come back to applet page again

If applet fails to laod by throwing above mentioned exception then bug is reproduced