1. The mkxauth utility helps create and maintain X authentication databases (.Xauthority files). Mkxauth is used to create an .Xauthority file or to merge keys from another local or remote .Xauthority file. .Xauthority files are used by the xauthuser-oriented access control program, which grants or denies access to X servers based on the contents of the .Xauthorityfile. The mkxauth package should be installed if you're going to use user-oriented access control to provide security for your X Window System (a good idea). From Mandrake 9.0 RPM