Hi List, I am running Exchange 5.5 at WindowsNT 4.0 sp6a. I have 4 GB partition at system drive. The same configuration has been working since last 1 year without any problems. But since last few days, the system runs out of space on the C: drive. When I select all the files on the C: drive and check the properties, the total space taken by the files and folders is only 2.5 GB. But when I see the properties of C: drive, it shows 3.7 GB full. I am wondering where the 1.5 GB has gone. Can anyone help me.............. Regards, Chand Deshwal (M.Tech CS&E, MCSE, CCNA) IT Manager Kampsax India (P) Ltd., 809, Phase-V, Udyog Vihar, Gurgaon E-Mail: CDD@xxxxxxxxxxxxx Web: http://www.kampsaxindia.com Ph: +91 124 5092500, Extn.12 Direct: +91 124 5092512