it has been stuck at 28 percent for 1-1.5 hours. now granted I am defragging a 1tb drive (7200 rpm laptop drive). but I've only used up maybe 460 to 480 gigabytes. so let's say half. is this normal? my last lappy had a 500 GB HDD and was able to be defragged in less time, yet had most of its space occupied, it was slower and the computer was relatively crappy. so as I said, is it normal?