I was playing Transformers yesterday on PS2 and I can mimic the behaviour of the robot walking by itself without me touching the sticks. On one of my DS2's when I very sligthly press left stick to right and robot start to walk I can release the stick and the robot is still walking until I move the left stick again, this doesn't happen all the time though but it's pretty easy to replicate that behaviour. This same thing happens with my other DS2 but I can only make the robot go by itself down I think. I have tried this on some other games and I can't replicate it. What is it that causes this problem? Why doesn't the Transformers game update the stick movement correct? Is it a bug in the game? Is it the controller port?