As the topic title says really. It just seems a hell of a lot, and seems to fluctuate without me adding much really, but also seems to go down without doing much swell (e.g. when I deleted a lot of photos to put on again for another reason, the other segment seemed to have halved, but went up when I re added them (along with the photos part). I know that it obviously depends on how much you have on you pro but is this amount about normal? I don't have much on here really, the biggest thing by a long way is MS Office 2011.