Last Thursday, i shut my MBP down and gave it to a friend to look after while I went on a driving lesson, OS X has a password so he couldn't have got in, but when i turned it back on that afternoon, some of my apps were missing, such as Address Book, iCal, iChat, iSync, Safari and a few others I still haven't noticed. I have been able to re-install the apps, but why did it happen in the first place?!?! Early '08 Macbook Pro 2.5GHz version Any help much appreciated. EDIT: I haven't been able to re-install iSync, it isn't available on Apple's website for download, and other sites want me to pay. It isn't a re-install option when i put the Mac OS X Install Disc 1 in. Any help in re-installing iSync would be very helpful.