I have google searched and everyone who has this problem has an error in locking /home/user/.Xauthority. The issue is that it is trying to lock /.Xauthority. Obviously there is no .Xauthority in /, and even if there was it would not be accessible to a user. This problem is only occuring with one user, all other users work fine. What should I check? Here’s what happens:
[root@box dir]# ssh USER@HOST USER@HOSTS's password: Last login: Thu Jul 25 10:09:19 2013 from OTHER_HOST (30 sec later) /usr/bin/xauth: timeout in locking authority file /.Xauthority
Check that your user actually has a valid home directory, which exists and is accessible by that user.
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