When and how often does Spotlight index a drive? After 1-1/2 months of owning my MBA, Spotlight is indexing my drive today. I don't know if it is doing it for the first time. But it is the first time I noticed it, as it is slowing down everything, and is taking forever (~ 1-2 min for every 1%). I would have thought my drive would be all indexed by now -- 90+ days of owning it. I wonder if it has anything to do with what I am doing on my computer today, that may have trigger this. I copied 3 dvd movie files over and was ripping them with Handbrake today to get ready for a trip next week. I also connected an external drive to have it re-formated. However, after all the ripping was done, and external drive removed. It is still indexing at the moment (2 more hours to go according to the progress bar). I am tempted to restart the computer, and stop the indexing. But then I shouldn't, if it's a part of the normal routine.