This has been my personal computer since 2008. I've taken very good care of it, but time has still taken it's toll. On either side of the mouse, where the user is meant to rest his/her wrists, a little bit of the plastic hardware has worn away. This is very common in this particular MacBook model and it doesn't seem to affect the functionality of the computer at all. The other issue is that the "o" key has stopped working, but I just use the on screen keyboard for it, so it hasn't really been much of a problem either.INCLUDED