Hi all! A day before yesterday without any reason the windows vista security center start to complain that has no Antivirus & Malware program to monitor the pc.For Months i had no problem with my Nod32 Antivirus. The only solution i found was to change to "Dont monitor my Antivirus" state to stop the messages from vista security center. Any ideas what cause this? Any solution to make it work correct like it was before? Thanks in advance !!!!