I need to look at something first,
I would go ahead an proceed with javaRa, and
up- date your java version of java, you can actually do that from the control panel, Click Start, control panel look for java looks like a cup of coffee double click it look for the update option, only install Java uncheck any Toolbars or additional software that wants to be installed.
If you enter your
add/remove programs list you can see the Java version installed there should be only 1 installed ---> 6 update 14. if that is installed you don't need to update.
In the web browser when you have it open if you click help at the top and then click
about Mozilla firefox This will tell you what version is running ok.
One thing about firefox
Safe Mode this is not a solution to the problem it just tells us that an add/on in firefox may be causing an issue I will supply a link for that later.
See this please How to use firefox safe mode------->
http://kb.mozillazine.org/Safe_mode