When i first started to use avast, norton or f-secure didnt have this feature. So f-secure was just taking my computers juice for nothing.One of my favorite features is avast screensaver which scans your hd:s when computer is on screensaver. Also avast found few trojans that f-secure didn´t found. F-secure was just terrible (deleted outlooks inbox when it had one virus). Interface can be changed btw.In short Avast! is one of the best antivirus i have used. This review is for 4.8 stable versionEvery antivirus has it´s cons and pro´s, but when you get antivirus for free you can´t really complain things like user interface if it can do what you want.