This is something that happens randomly when I'm playing. When I'm moving, my character suddenly starts moving by themselves and runs in circles even when I take my hands off the keys. I checked my Control Config to make sure they're okay, and they are. Is there anything I can do to gain control of my character's movements again? This only affects my account on the computer and no one else in my family.

Game: Kingdom Hearts 358/2 Days
I have Windows Vista Home Premium.