I am also seeing this problem.  With &quot;ssh -vvv&quot; on SL with the stock X11 I get the following:<br><br><span style="font-family: courier new,monospace;">debug2: x11_get_proto: /usr/X11R6/bin/xauth  list /tmp/launch-fliXNa/:0 2&gt;/dev/null</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">Warning: No xauth data; using fake authentication data for X11 forwarding.</span><br style="font-family: courier new,monospace;"><span style="font-family: courier new,monospace;">debug1: Requesting X11 forwarding with authentication spoofing.</span><br style="font-family: courier new,monospace;">
<span style="font-family: courier new,monospace;">debug2: channel 0: request x11-req confirm 0</span><br><br>I tried running the xauth command without redirection and did not get any output.<br><br clear="all">     - Chris<br>

<br><br><div class="gmail_quote">On Tue, Nov 10, 2009 at 1:52 PM, Aldo Dall&#39;Aglio <span dir="ltr">&lt;<a href="mailto:adaglio@gmail.com">adaglio@gmail.com</a>&gt;</span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
<div><div></div><div class="h5">Jamie Kennea wrote:<br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
On Nov 10, 2009, at 10:42 AM, Tom Lane wrote:<br>
<br>
  <br>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Since updating to 10.6.2 last night, I notice that every single outbound<br>
ssh -Y connection reports<br>
<br>
Warning: No xauth data; using fake authentication data for X11 forwarding.<br>
<br>
This happens with both 2.4.1_beta1 and the stock Snow Leopard X11.<br>
I&#39;ve seen this message before but only occasionally; now it seems<br>
100% reproducible.  Anyone else see it?  Any suggestions about<br>
investigating the cause?<br>
    <br>
</blockquote>
<br>
I see it going from a 10.6.2 machine running 2.4.1_beta1, but not on my other machine which has 10.6.2 with the vanilla SL X11.<br>
<br>
Jamie<br>
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I do not have this problem. I am running 10.6.2 with the default X11 on SL.<br>
Aldo<br>
<br>
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