Hi Werner, > I should have said "thread" which runs in behalf of a user process. > Or kernel thread which runs in behalf of the kernel. Ah, OK, I understand. Thanks for clearing that up. Ralph. - Kernelnewbies: Help each other learn about the Linux kernel. Archive: http://mail.nl.linux.org/kernelnewbies/ IRC Channel: irc.openprojects.net / #kernelnewbies Web Page: http://www.kernelnewbies.org/