For several years I use Norton Internet Security. It started in the 2004 version, between I've left out a few versions because the Symantec product my PC too loaded, the delayed start, etc .. The problems were yesterday, better let's say, 2008 and 2009. Since the 2008 version was the different and very well optimized since the 2009 version. Norton slows the system no longer runs quietly in the background and load the system is not in the normal working environment. Now with the recession Norton consumed 0 to 2% of the processor power. How do I join previous speakers, Norton finds all vulnerabilities such as viruses, rootkits and worms. Updates are drawn in the background and installed automatically. Another feature, Query window as with "May actually access the program now" accounts thanks to the Community Watch function and the automated tools. Any user who is worried about security and a simple program looks without many query window, defaults etc. of here has a cable-ready program. Even professionals can customize everything goes: "Rights Shares, program control, etc". What have I complained to the entrance at the primary products: System Performance brake, long loading times, etc., the product version 2010, greatly improved. Norton slows the start in my operating system (Windows 7 - Home Premium 64-bit) is not enough. The installation goes quickly. Even product updates to a newer version with a valid license is possible to just go in the Norton Account to check for updates, complete. Everything goes by itself. Another positive advantage the 2 user licenses, there are 2 product key, which can be activated separately.