antivir is a bad antivirus solution, and those r false alarms. u can just ignore them. or simply use other, better, antivirus solution, like nod32, kav or norton.
norton is a good software, and i use it since dos age, and i never had a single problem.antivir is... well, detecting cf as a virus tells enough. anyway, m8, no sweat, i'm here to help.