Daca ai firewall (antivirus), pune Firefox in lista de exceptii.
Daca nu, instaleaza-ti un antivirus si scaneaza compu (ai link la MSE mai jos).
Daca tot nu merge, ia Google Chrome!
Microsoft Security Essentials: http://www.microsoft.com/en-gb/security_essentials/default.aspx
Google Chrome: www.google.com/chrome
Daca ai probleme cu firefox, atunci descarca alt browser.Eu folosesc Google Chrome si sunt foarte multumita.