Over the summer our Linux server jaguar was renamed and got a new IP address. It is now ecc-linux2.csuchico.edu. If you log into ecc-linux2 you will not have any errors.
You can still log into jaguar.csuchico.edu, you will automatically be redirected to ecc-linux2.csuchico.edu.
However, if you use "jaguar" you will get an error message. The ssh program keeps track of the IP addresses of all computers you ssh to. ssh does this to prevent someone who hacked your network from tricking you to log into a different computer and steal your password in the process. Since jaguar has a new IP address, ssh is assuming that someone is trying to steal your password; you will get the message below.
If you get this message and want to keep using "jaguar" read the bottom of the message and execute this command:
$ ssh-keygen -f "<your home directory goes here>/.ssh/known_hosts" -R "jaguar.csuchico.edu"
Alternatively, you can just delete your entire known_hosts file
$ cd
$ cd .ssh
$ rm known_hosts
If you delete your known_hosts file, the first time you ssh to a computer it will ask you if you are sure you want to connect.
If you use putty and want to continue using "jaguar" you have to use the registry editor and delete jaguar's entry.