i have just tried a legal version on final cut pro 7 and it runs very slow on my macbook pro. and so does my mac after i close the program and i mean very slow like it takes five mins for my curser to make the icons pop up. i have run disk warrior and though i cant run the repair disk as it is my start up disk. but i did run the graph on disk warrior and it shows that my disk is 42% ineffective. thank you for your time.