Hi I have to apologize to all the people who shared this discussion the last days for my ignorance of the difference between linux paging and hp-ux swapping. I have read documentation about kernel and kernel programming with a chapter referring to paging swapping. I am very sorry. Greetings, Dietmar -- "For those about to rock - we salute you!" Dietmar Stein, Systemadministrator UNIX/Linux http://home.t-online.de/home/dstein2203 [EMAIL PROTECTED], [EMAIL PROTECTED]