Hi I am using Linux Lite and the upgrade button to upgrade Firefox is greyed out. I have been told that Firefox will also upgrade Flash at the same time, is this right? It has Firefox 2 installed. Are there any problems that come with higher versions of Firefox? I don't know what password was used when I had the pc as it was a display model and the shop put the OS back in for me as there was a lot of stuff on here from customers messing about with it. I don't have to put a password in when I start the netbook up. if someone could give me step by step instructions I'd be very grateful. I need the Flash upgrade as there are a lot of things I want to play on Facebook but am unable to at the moment. Thank you.