I noticed my 2010 13" stock was overheating like mad for no reason even when it was just light use like internet surfing. So I checked out activity monitor and found some process called mdworker was consistently using 40-97% CPU. After some research I found out it was indexing for spotlight but that didn't make sense since I've had this laptop for almost 4 months now without this problem until like two weeks before. Needless to say, I don't even use spotlight; I use Alfred. But, turning off indexing saved my heat issue. My main question is, has anyone else had this freak issue with mdworker using so much CPU randomly with no reason? I mean, I haven't added any new files or any large file transfers. Any explanations?