[ubuntu] ls -r returns no results

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http://ubuntuforums.org – Hi, Im using ubuntu 11.04 server edition and when i run the command "ls -r" as a root user after jsut calling "cd" it simply returns nothing, if i call "cd /etc" then "ls -r" it returns all the files and folders in the etc directory, i tried a restart, what is going on??? Nat (Hardware)