In the CRB, it calls out:
If you have the Combat Reflexes feat, you can add your Dexterity modifier to the number of attacks of opportunity you can make in a round. This feat does not let you make more than one attack for a given opportunity, but if the same opponent provokes two attacks of opportunity from you, you could make two separate attacks of opportunity (since each one represents a different opportunity). Moving out of more than one square threatened by the same opponent in the same round doesn't count as more than one opportunity for that opponent. All these attacks are at your full normal attack bonus.
Additionally, under "Speed" it reads:
If you use two move actions in a round (sometimes called a "double move" action), you can move up to double your speed.
Does a "double move," which counts as 2 actions, also count as 2 opportunities? Therefore prompting multiple AoO's from an individual (assuming you move through their threatened spaces during both move actions.)