Cannot sign into Essbase with Java 1.7 enabled [Regression from Java 6u31]

Java version: 7u17

Last version it worked in: 6u31

OS: Windows XP 32bit

Browser: Firefox 19

Applet Name and link: http://www.oracle.com/technetwork/middleware/bi-foundation/administration-services-090177.html

Bug description: A user reported the following: "Cannot sign into Essbase with Java 1.7 enabled.
I tried un-installing Java 1.6, rebooting, and signing into EAS Console.
I searched the internet, and a lot of support blogs tell me to install Java 1.6, including the vendor it's self."

Reproduced by Java.com team: No