Windows vista size of files and used space dont match

[rhitam30111985]

Hi all , I am using a Compaq presario c700 notebook PC with windows vista(32 bit) . the specs are as follows :

Intel Dual cpu t2370 1.73 ghz

2 GB ram


Now i am having this strange problem . when i select the size of all files in one drive the size is around 65 MB (including hidden files) . But when i see the disk properties, the used space shown is 85 mb . whats wrong ?


I have attached images also for any reference :

http://picasaweb.google.com/rhitamsanyal/UntitledAlbum#5273368137070401378

http://picasaweb.google.com/rhitamsanyal/UntitledAlbum#5273370591918626578

appreciate any help ,

regards

[jg007]

it is probably not showing all system files etc, try downloading "windirstat " and running it to locate any large files but make sure you are running it elevated.