unfortunately all Symantec Norton protection products, does use up a lot of resources in any computer installed with it, it is constantly running in the background and unless you change the update timings, it will be constantly checking for updates all the time. A recent survey puts Norton at the top of resource hogs with McAfee a close second. if you want to keep using it you have to just accept the slow start up, slow internet browsing, you can type in "norton resource hog? " your browser and see the results for yourself, the other problem with norton is it is very difficult to remove without leaving bits behind, if you want to remove it, check the norton website for help full removal tools for your version, thats about the only good help they are giving nowadays. By they way both Norton 360 and Microsoft’s Windows Live One Care are almost identical in features and performance, and resource hunger.
