Bit of an odd problem. I've got a server I can SSH into as one of two logins: root or erik. Once I've logged in as erik I've tried to switch to the root user:
# sudo su - root Password:
And entered the password. After several failures I thought I might have forgotten. So I SSH'd in as root, and changed the root password:
Now back to the other shell (erik) and attempt to run
sudo su - root and again, it won't accept the just changed password. Any ideas?