[OpenAFS] ACL for single files

[Jim Rees]

  Ok, this is going on because you're running xauth before aklog, and it
  can't write the XAUTHORITY file because your homedir isn't accessible.
  This means your ONLY option is to get PAM working.

No, another option is to put your .Xauthority elsewhere.  That what I do,
and it works fine, although it requires the cooperation of your sshd.

But you already have to hack sshd to remove the stupid path permission
checks.