Can someone please answer the question as to why the page file on both my home and work computers gradually increases in size to the point where everything slows right down. It usually starts at about 300megs where everything is fine and slowly increases to about 900megs after about a week. Shutting down all applications only reduces it to about 600megs. Why doesn't it go back down to 300megs where it started? Only a reboot will do this. I don't see any processes running which should not be. I have tried altering the PF size, but it makes no difference.