I am using a Sony VAIO laptop with Windows 7 Ultimate. I upgraded from SS10 to SS11. After installing SS11 I couldn't connect to the internet. I couldn't activate net defense. I finally unloaded SS11 so I could use my computer. I was using SS10 with both Net Defense and SS A/V running with no problems. I am not using any other firewall or A/V programs. I will re-install when you give me some ideas on how to proceed.