Firefox users are getting hit with the same things. I was reading about some Firefox users that got a virus or ad thing that was launching IE with ads on their computers. Anybody connected to the internet without a firewall and antivirus is just asking for problems. Leaving your PC turned on and connected 24 hours a day is also asking for trouble and wasting energy. I think my PC at home is turned on for maybe 3-4 hours a day, longer on weekends as the weather gets colder. If you don't have antivirus, download Avast, it's free.