for a more secure, restricted user only clean try this solution (works with most other software too)
goto the CCleaner install folder (usually c:\program files (x86)\CCleaner)
make a copy of cccleaner.exe
rename the copy of cccleaner.exe to cccleaner-users.exe (the name dosen't really matter aslong as its different)
make a new shortcut / update the old one to point to this new file
et viola! - windows user control now lets a restricted user run CCleaner without needing administrator rights - of course it can't clean system level tracks but it can still clean the restricted users tracks
how about making the next version of CCleaner perform this trick automatically on vista systems?
remember that on each CCleaner update you will need to redo this trick or the CCleaner-users.exe will be based an old version of the CCleaner executable
-f173