Free Space?? please help

Hi

Im not sure if this is wrong, but it has gotten me slightly concerned.

You see, i use Diskeeper 9 defrgamenter as my defrag programme and its great. However i noticed this the other day:

http://img143.imageshack.us/my.php?image=freespaceny2.jpg

theres about 2gb off difference between what diskeeper 9 claims as free space, and what my basic hard drive properties throguh windows says :?

whats up with that? or is it fine?

And which one would be correct?

cheers

its 160GB

yeah i dunno.. works fine though haha, but it is claimed to be 160GB (according to hewlett packard) hahaha..

I reformatted it but left that HP recovery drive just in case..