Thanks Redhawk, now I know the difference between looking and seeing!
It looks as though the problem (issue) is that the "Include non-fragmented files" tick box is maintainable but the list creation code doesn't actually look at it.
Would a member of the Piriform team like to look at the code and let us know if we are right, and if so is this a candidate for the next bug fixing update?
Regards,
Crumbley.