I have this antivirus program installed on my laptop because my old program had expired. The installation went quick and without problems. Easy CD into the drive and can do - First, the remains of my old four-protection were removed. Competitors were, identified as a threat. I use the computer primarily for surfing, watching movies and for e-mail and Skype. F-Secure runs with me now several weeks invisibly in the background and so far I could not see any restrictions in the use of laptop (Windows 8). For me this is the most important. The scanning and the update check is performed regularly and in the background. Once a problem has been reported and eliminated directly. After a restart should be performed. Since everything is calm again on the information superhighway. How comprehensive virus protection really is the long-term test remains to be seen.