I am after many years PC-Cillin now the first time switched to a new virus scanner, because the virus updates lasted incredibly long (with ISDN) and at Windows startup in the first minute, the CPU was fully utilized by the services of the scanner. After recommendation from various manufacturers I decided for G Data AntiVirus. Installation, virus signatures, all easily and well. But security or not, I was appalled at how long a full scan of my PC took. 5 hours at 35GB data! Even in games or browse PC after data is always recommended to switch off the virus monitor, access was painfully slow for someone who is accustomed to PC Cillins speed. That's why only 3 stars for this good, but extremely slow Antivirus.