My Adobe Premiere Pro CS4 is playing about one frame every ten seconds and saves the same way, my videos play just fine with any other program. Running on WIN 7 with 16 GB RAM, Intel Quad Core i7. No excuses other than Adobe caters to Apple and does not give a dam about their Windows customers. I will never buy another Expensive Adobe product is this is how they show their appreciation for buying their crappy products. If I need a new editing program I will go with Corel. All update are installed and all drivers are up to date. Only thing I can figure is the last update intentionally sabotaged the software in an attempt to force CS4 users to upgrade, but then, I see others with CS5 & CS6 complaining of the same issue.