Please help, I'm completely new to Linux operating system and I've bought the Acer Aspire A110, do I need antivirus / internet security software installed.?? I'm demented please help as this is a birthday present for my daughter age 10 and want to make sure it's protected and safe as she will be using it on social networking sites and browsing purposes? I would really appreciate a quick response as her birthday is on Saturday (2 days time)