"NTFSDisableLastAccessUpdate"That is a registry entry. Google it, and read what it is about.Nothing more than an incremental improvement. Worked for me at least.Cheers,Braun

Been known for a long time, helps lots when lots of HD activity is being used.

Yep, a good tip to know about and implement. In the 'FS2004 and WinXP Optimization Guide V2' I recommend this same thing. Only I have it as a command you enter on a command prompt as opposed to the registry edit. Either way it does the same thing, 'disables' the Time Stamp of files being updated every time they are accessed. Which means if it is 'enabled' that there is a couple of bytes being written to a file for every file access. This feature has it place, but since it means a slight hit on I/O performance and is usually not needed by the average end user, it is definitely advantageous to go ahead and disable it.Jim

Has anyone benchmarked the loading time after doing this? I disabled it simply because I don't need it. It might not make a very big difference but it could reduce loading time of photographic sceneries somewhat since they read thousands of little 256x256 textures on startup.