I have purchased an internet cleaner and it said it would clean the "pagefile.sys". What is this first of all and since it says it cleans it at shutdown why does the file still say it has 384 mb in it after I restart the computer? For instance it says on the properties tab " modified (date and time with 384 mb) " then " last accessed (date and time with still 384 mb) ". Is the cleaner working or not for the pagefile? Someone please enlighten I would really appreciate it. Thank you. I'm running windows xp sp2.