This is the Firefox version: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.10) Gecko/20100914 Firefox/3.6.10

I also have some developer add ons installed which may or may not cause a conflict.

Firebug

Fiddler Hook (obviously installed with Fiddler)

Web Developer

I also have Java in the list of add ons and something called Default Manager

The plugin tabs shows Silverlight, Flash, Java, some MS Office 2010 plugins, Adobe Acrobat Reader, Google Update and something called WPI Detector.