Loved the product for a long time, but then it changed. For months I kept getting the Big, Bad, Blue Screens errors. Took me months, but found out it was CCleaner.com. Had to do a system recovery -- then after I installed my apps -- my computer kept re-starting on its own. Did another system recovery. And that's when I found out it was CCleaner causing all the problems. It has been over 2 months -- no more Blue Screen errors or errors of any kind. I have a 2006, Windows XP Home Edition, Emachine. So watch for any problems -- it may be this program.