I sent in my MBP to applecare a week ago with my 500GB HD...because the trackpad wasn't working. They replaced the trackpad but.. I got MBP back earlier today and in the package a letter saying they reinstalled Snow Leopard on my 500GB HD. So now I have my HD with Snow Leopard completely empty. I'm wondering what would make them do this? I'm sure it could be any # of reasons but specifically what? I'd like to know what would have led them to have to do this? Luckily I have an external HD that saved the important stuff.....but i'd really like to know why applecare did that..