I was running some video clips in a PowerPoint Presentation this week & most of them (5 out of 6) worked perfectly. the last one would play really slowly, skipping quite a few frames, probably only showing every 10th frame or so. If I quit Powerpoint & play the clip in QuickTime, it works perfectly, but for some reason it won't work in PP. I even tried making up a new slideshow & inserting the clip, but no luck. Any ideas on what I should be looking for as the root of the problem?