Because the test in chip 01/2006 I have the G Data Internet Security 2006, which bought Bitdefender superseded 8.0. Computer configuration: Win XP SP2, AMD CPU 2000+, 1024 MB RAM, DSL, SMC router and connect to the router via Wi-Fi - After uninstalling Bitdefender and initial installation instant Internet function and start the virus scanner (very slow). After crash of the PC during the scan restart was required. Then no Verbidnung the Internet was possible. - Following detailed work (manual entry of programs as authorized programs, specific settings, ...) was again a connection to the Internet, but since instability of the computer: - Already legitimate programs are asked from time to time again. - After a period 2.1 hour to max. 2 hours, the network is disabled (even though all power saving options are disabled) - After a maximum of 2 hours, the computer freezes. => After long hours and days of searching for causes and appropriate settings I'm going to (additional) Norton Internet Security to buy me to get back to have a working computer.