Have you purchased Kaspersky not regret running without problems in the background without working on the computer influence. Had previously G-Data, with which I was not at peace, as it has always occupied the computer and works only after the G-Data was done with everything, was possible. looking at through the PC for viruses, etc. the program suddenly ran backward, which is not the case with Karsperky, you hardly notice it or not at all. A perfect program for me.