after installing the latest sudo and adding a user to sudoers with which to test it, i encountered something strange -- namely, immediately after i issued a command (for example, 'sudo ls') sudo would print its ethics banner, and proceed to convince itself that i had -- without typing a thing -- failed to enter a valid password three times. hence it's pretty useless. i checked that my sudoers file was correctly configured, diddled with pam, added myself to the sudo group, all met with no success. except for the latter: adding myself to the sudo group bent sudo to my will, but so much so that it didn't bother asking for a password, which for my purposes doesn't fit the bill.
kernel 2.1.127 libc6 2.0.100-2 sudo 1.5.6p5-1 all packages on my system were sucked down from ftp.debian.org circa 2 AM EST, so they're about as fresh as can be. --chris