The "sudo" command on Jaguar takes almost a second to launch which can be annoying. This is due to the connection to the security server. To revert to the 10.1 behavior, edit (using sudo) the file /etc/pam.d/sudo. Comment out the "securityserver.so" (second) line, so it looks like:
#auth sufficient pam_securityserver.soThe "sudo" command is now effectively instant! The effect is immediate and very noticeable.
Mac OS X Hints
http://hints.macworld.com/article.php?story=20030115073251725