Description - Printing applets do not load on FF2 starting b10

Steps to reproduce :

Install 6u10 b10
Invoke any of the printing applets from the following location -
http://sqeweb/deployment1/deployment_tiger_exec_ws/deployment/docs/plugin/proc/JPI_printing.html

Actual behavior - The applets do not load on FF2

Note - The applets load fine on FF3 and IE7. Also this problem started with b10.