Finally, I can work with my PC again. My computer boots up again quickly, standard programs run smoothly, e-mail program running again quick. Previously I owned G Data Internet Security. I thought that one should support German products (Trust in German security), but a sensible work on the PC was not possible! I was about to mount me an SSD drive, so I thought that the hard disk is just too slow. Fortunately, the subscription ran out of G Data. Since I also wanted to give other suppliers an opportunity and Kaspersky had rather get good ratings, I took the plunge and switched to Kaspersky Internet Security. As already indicated at the outset. The program in my opinion is much more mature and consumes much less resources. Furthermore, the menu is very well designed, so that everyone can work with the program. The installation was quick and easy. From me, who has used many anti-virus programs, a very strong buy recommendation!