You shouldn't defrag temp files - you should run CCleaner (and any other cleaning/optimizing you normally do as maintenance) before you defrag. The pagefile should be in it's own tiny partition & cleared when you shutdown for the night. You can also turn hibernation off, giving up the hibersys file before defragging, if you wish. Although some disk-oriented applications ignore the pagefile and hibersys file - this one may too, I don't know - moderators??.