Have you got any of these Addons (http://www.theregister.co.uk/2010/02/05/malicious_firefox_extensions/) ?
It is a worry perhaps naively one expects add ons from their site to be safe.
I try not to get involved in the 'My browser is safer than yours' arguments as I believe that alll browsers have faults and much of the problem is the user...but somehow I think that had this been IE it would have been front page news on the BBC website.
I agree, there is a good deal of IE bashing going on, but I suspect most BBC reporters haven't even heard of Mozilla.
Mozilla, it's a Japanese film character, no, that's Godzilla. ;D