more rotten apples

i got my mac back today. while listening to music i noticed that the music would skip, and while watching a movie, it froze up on me and eventually i had to do a hard shut down. so, its back to the apple store with this one. sadly, i am not surprised. the mac i had before this i only kept for eight months, in which time i had it serviced well over 15 times for different issues. basically, they rebuilt that computer four times: numerous midplane replacements, new harddrives, new memory, new keyboard and mouse. i have a feeling that this is the beginning of the end of my latest mac.