I have a new PC with a fresh install of Windows 7, 64- bit. I have installed the latest Avira Antivir Personal but have been told this is not really 64- bit compatible- is that right? If so, what other decent, free (if possible) anti virus software is fully win 7 x64 ready? Is it worth using a third party firewall over the Windows default? and if so any suggestions? Again, fully up to date with Windows 7 x64. I understand you have to turn off Windows firewall if using another one, right? Basically, what are peoples opinion on the optimum internet security suite or set up for Windows 7 x64? Any advice would be appreciated and sorry if this topic has been posted before. By the way, does anyone know anything about the O2 Broadband standard router and the reported security vulnerability? I was sent a new key but is it safe now?