Anyone who's saying "the character is moving on it's own blah blah blah" just press that key again or press some other random controls. Sometimes it just thinks you're holding down that key.
2 glitches I found: First, after assassins throw daggers, they can hit an enemy, turn invisible, but still kill you. Second, if you are in low-def, and you pause, the graphics turn hi-def. Great game!
There is one, in the bottom right corner ;)