logcheck has started noticing the above error. I did a ls -lsa /usr/bin/mlock and the result is: 8 -rwxr-sr-x 1 root root 5668 Jan 13 2002 mlock Does this mean that somehow the permissions have changed? Should they have changed - and why? How should I correct this? (Has my box been cracked?) It's a Debian 3.0 testing box. Any advice would be helpful. Cheers, Andrew