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ssh & x11 problem

Folks,

I am trying to ssh one of my network machine. I am facing follwing problem:

Quote:

# ssh 192.168.1.23

root@n4's password:

/usr/X11R6/bin/xauth: error in locking authority file /root/.Xauthority

-bash-3.00# exit

Here are the results in verbose mode:

Quote:

# ssh -v 192.168.1.23

<snip>
.
.
</snip>

debug1: Entering interactive session.
debug1: Requesting X11 forwarding with authentication spoofing.
/usr/X11R6/bin/xauth: error in locking authority file /root/.Xauthority
-bash-3.00#

Any idea?

Delete the .Xauthority file and try again.

Quote:

Delete the .Xauthority file and try again.

Is it safe to delete it?
Will it have any adverse effect on the concerned machine?
What is the cause of this problem or message?
What exactly does the "/root/.Xauthority" do?