corky-q, Diskeeper defragments both the paging, and MTF areas when you do a boot time defragment. If you try to defragment a paging file of MTF file while the OS is online, it will cause errors. Go into diskeeper and select a boot time defragment, make sure you check all the options you want, and then click set. Then reboot and watch the screen that pops up. It shows that it is defragmenting the paging files, MTF files, directories, and standard files. It took a few minutes to run and my computer is running a lot faster.