Hi, when I turn on or restart my computer, the partitioned part of my hard disk has free space. However, within an hour or two, even if I download nothing, the remaining free space dwindles rapidly until it hits 0 MB. I've looked at the processes running under Task Manager, and none of them seems to be a back door. And I've also run antispyware and antivirus programs, none of which turn up any problem. This "disappearing hard disk space" trouble has only been happening for the past few days or so. Does anyone know what the cause and/or solution might be? Thanks very much!