Okay I have a 15" Mac book pro it's a early to mid 2011 model running the latest lion software, the first issue I'm having is my trackpad seems like its either sticking , or missing a spring or something. Nothing was ever spilled on it nor was it abused, i.e beaten on. It's quite erratic, with the slightest touch. And its visibly not the same, nor does it feel "right". The second issue im having is that If I leave my Mac running till the battery dies it has one of two problems, the first being it won't save any changes I made prior to. Like i had edited a bunch of photos , moved them into folders and the next day, they were back in the same place they were from the night before. Then my 2nd issue is , at least twice now, upon booting up it freezes leaving me with a endless white screen and the circle spinning , so I tried to restart same result , reset pram same result , ran hardware test all shows good, so I would have to do a restore to get it to work again. Anyone have any ideas? Also with the track pad is this something that can be easily replaced? If so I tried searching online to find replacement pads with no Luck where do they sell good oem trackpads? Thanks in advance for any solutions, comments, or questions.