I have no idea what some have here for trouble. Kaspersky 2011 has not changed compared to the 2010 version. Of course, it takes some processing power to run optimally. The 2011 version has become slightly faster, visually it is clearer and not so colorful. There are a few features to come in order to increase the optimality of the security and other functions have been significantly improved. Updates still work casually, without the user having to be prompted and can be completed quickly. The fact that every few hours an update is made, is also like its predecessors, the security of the computer guaranteed. As always, highly recommended!