You guys may know about the Debian ssh key vulnerability announced last week:

http://www.ubuntu.com/usn/usn-612-2

If you haven't, here's the quick summary: keys generated on Debian and
Debian-derived distros, including Ubuntu, may be weak.  We've thereby
had to revoke any weak keys that have been uploaded to us in the past,
as well as regenerate our own host keys.

The two ways this will affect you is:

- You'll get a host-key has change / man-in-the-middle message when
you try to do git push, git pull, or heroku clone.  This looks like
this on openssh:

@ WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED! @

Edit your .ssh/known_hosts file to remove the line with the heroku.com
host key, or just delete the entire file.

- If your key is weak, you'll get a permission denied now.  Regenerate
your key (i.e., ssh-keygen -t rsa or dsa) and run heroku
upload_authkey.

Adam

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