I keep track of number of files for some folders. And today, for some unknown reason, the number of files changed . There are supposed to be 52,483 files in this folder, but "get info" shows that there are 50,250 files I entered Time Machine, and those numbers changed too I even checked back-ups from February of 2014, and that folder also was missing 2233 files according to "get info" I randomly checked 10 back-ups, and in each back-up this folder was missing exactly 2233 files. Thankfully, I don't seem to see any missing files at all. However, this still bugs me What kind of sorcery is this?!?! My inner OCD is killing me! Few things to note: * I always check the number of files before Time Machine back-up and shutting down. Then I type these numbers on a text file. * A couple of days ago, I changed my start-up disk to core volume using this instruction - http://awesometoast.com/yosemite-core-storage-and-partition-woes/ * A couple of days ago, I was asked password whenever I moved files to Trash. So I went to Home Folder, and clicked "apply to enclosed items."