If I don't use ATK, my phone runs very fast and smooth with a ton of crap listed in the back ground. It even scrolls fine. However, it benchmarks lower than when I use ATK to kill everything. My quadrant scores really get low when ATK shows a ton of programs. Kill them and the phone is slow, but benches higher. I stopped using ATK for the most part, but occassionally do for what ever reasons. High bench marks makes me feel good, but so does a smooth phone!