Instruct: Classify Amazon reviews into positive or negative sentiment
Query: unusable

I am always very happy with my purchases at Amazon, but this one has been a blaring exception.Video starts and stops every few seconds, audio makes loud clicks, making it impossible to watch. All 5 disks are the same.Just like the old software copy-protection, it hurts the legitimate user while not protecting against bad guys.You should mention that it is copy-protected.