Hello, I've been having this problem for a while, and I'm on stock 2.3.6 and go launcher. at first I didn't have any security enabled and the standard swipe to unlock was jittery and unresponsive, as if the screen lost track of my finger every fraction of a second. Now that I use a pattern unlock it's a lot worse. unless I wait a few seconds before swiping, it will almost always fail to register the entire swiping movement and only pick up parts of it, which of course eventually triggers cerberus alarms, which can become annoying. any hints? 
