Does CCleaner wipe the Swap File?

Some of the other cleaner apps clean the swap file.

Not as I am aware.

How to Clear the Windows Paging File at Shutdown:
http://support.microsoft.com/kb/314834

Watch the 30 second easy way video: <== be very careful with changing other options
http://www.metacafe.com/watch/865837/how_to_clear_pagefile

CCleaner has no functionality to remove the swap/paging file.

Is it a good idea to clear the PageFile occassionally?

Does it make the computer run better or is it purely for security?

To the best of my knowledge, the pagefile is rebuilt each time Windows starts.

Well, this is interesting information. So there is no need to clear the pagefile(or swap file). I am using XP.

Do you have any source, why this should be done, or it is it just your personal experience?

In simplistic terms, the page file is used by Windows to hold temporary data which is swapped in and out of physical memory in order to provide a
larger virtual memory set.When the system boots up, the Session Manager process determines the list of page files to open by reading the value in the HKLM\System\CurrentControlSet\Control\Session Manager\Memory Management\PagingFiles. This value contains the name of the paging file as well as the minimum and maximum size of each paging file. Windows supports up to 16 On a 32-bit system page files. running the normal kernel, the maximum size of each page file is 4095 MB. On x64 systems and x86 systems with the PAE kernel, the maximum page file size is 16 terabytes (16TB). On IA-64 systems, each page file can be as large as 32 terabytes. This is good reason why you may have a need to clear your page file.
Regards Richard...