We have sudo version 1.5.6p5 installed on HP-UX 10.20. It works fine for all users with uids less than or equal with 60001. Users with uids greater then 60001 get the message: "Intruder Alert! You don't exist in the passwd file" Can someone explain why is this happening. Does it has to do with sudo or with the HP-UX getuid() library function ? /attila