It seems to happen randomly, but I will be in a program (Media Player Classic, World of Warcraft and other games) and whether or not they are maximized I will randomly be "booted" from the program. For instance I will be playing World of Warcraft and I will be moving around or typing something and all of a sudden I will start hearing the pinging sound like I'm trying to type somewhere I'm not supposed to. I click back into the program and everything is fine, but it can be very annoying. I also noticed this today while watching a movie on my PC, my Media Player Classic would randomly not be the program that was on top, like I had not selected it. Any idea what could be causing this? Also I'm running 64bit Home Premium after an upgrade install.