@Arky I always assumed that the virtual memory file is recommended to be >1.5 times the memory (what you are referring to as swap file?), during the installation of Win2K or XP. Unless you add memory after the swap file is created, then you have to set the swap file manually. Whats your setting in System Settings->Virtual Memory I have 512MB and my default setting is 768MB paging file for all drives. This is the hidden pagefile.sys file on the C:\ drive. There are other types of cache files. Example for hibernation I think it uses hiberfil.sys. I have SCSI-Cheetah 15K drives. There is an option to "Write Cache Enabled" for hardisks. Note that this hardware caching option is independent of the operating system NTFS file system (NTFS) file cache that could also be in use if the drive contains an NTFS partition. Arky whats the name of the swap file you are referring to? Regards, Shree