It happened awhile ago - the lid won't stay locked. As you can imagine, this created problems with staying asleep while in my computer backpack. So, I have been just shutting it down everytime I pack it up and go somwhere. I've just barely begun to wonder if the added powering on and off is causing unnecessary wear on the computer in any way. What do you all think? Also, do you think this is a repair that I will have to send it in for, or something that I can do myself? Not that it matter too much, but it is the 15"/1.25.