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You may not consider clearing the windows
paging file as a necessary part of your security housekeeping. Ok it can add
quite a few seconds to your final shutdown time, but it doesn't need to be done
on a regular basis and you can always disable the option as and when you want.
But why clear the paging file you may ask.
Well the simple answer is security. It is not unknown for a third party software
application to temporarily store unencrypted information such as passwords or
other sensitive material in memory. Obviously the way Windows uses virtual
memory it is possible for this information to end up in the paging file.
To clear the file proceed as follows:
1/ Click Start button
2/ Next Click Run
3/ In the Run dialog box type: Regedit
4/In the Registry Editor Window navigate
to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Session Manager\Memory
Management.
5/ In the list that appears on the right
of the Registry window look for the Value Name: ClearPageFileAtShutdown
6/ If the Value does not exist Right Click
on the Memory Managment key and, from the drop down menu select New
7/ When you click New another drop
down menu will appear. Click DWORD Value
8/ You should now see a box with the words
New Value#1.
9/ Right click on this box and select
Rename
10/ In the rename box Type:
ClearPageFileAtShutdown
11/ After you have renamed the value,
right click on it again and select Modify
12/ Change the Value to 1
13/ The registry entry should now look
like this: ClearPageFileAtShutdown REG_WORD 0x00000001 (1)
14/ The changes will not come into effect
until you have restarted your computer
15/ To disable the feature just reset the
Value to 0
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