Hi Ibrahim, It will defrag the swap file, which standard defrag does not. It will also defrag locked files, which again the standard does not. Finally, you can just set it and forget it, and it will automatically defrag files that become fragmented. So you don't ever have to defrag manually. Good enough? All the best Steve _____ From: access-uk@xxxxxxxxxxxxx [mailto:access-uk@xxxxxxxxxxxxx] On Behalf Of Ibrahim Gucukoglu Sent: Monday 19 January 2009 03:41 To: access-uk@xxxxxxxxxxxxx Subject: [access-uk] Diskeeper 2009 versus standard defrag Hi Everyone. I've been looking in to this product Diskeeper which people seem to be able to work well with. What I want to know is what performance enhancements it will bring me over the standard windows defrag which I've been using up till now on a scheduled basis when I'm not using the computer.