To sum the info below:
Microsoft and Apple do not play well together. Microsoft wants to take control and so does Apple. From OSX 10.8.2 and above, powerpoint presentations tends to freeze. Not really freeze, but remote control and cursor keys stops advancing the slides.
To solve it for now, use keynote. Keynote can import and export powerpoint. So, just check your slide actions and you are off to a successful presentation. Below you will find the immense useful info I found on the net: