This bug has been opened on http://bugs.launchpad.net/bugs/332342

"The trigger appears to have been an ordinary ssh connection; I have ssh connection multiplexing enabled by default in .ssh/config, which explains the verbose output, but this output is normal for this particular host and is not normally a problem.

$ ssh -C cocoplum.canonical.comControl socket connect(/home/vorlon/.ssh/master-vorlon@cocoplum.canonical.com:22): Connection refused
Control socket connect(/home/vorlon/.ssh/master-vorlon@chinstrap.ubuntu.com:22): Connection refused
ControlSocket /home/vorlon/.ssh/master-vorlon@chinstrap.ubuntu.com:22 already exists, disabling multiplexing
Error reading response length from authentication socket.
Permission denied (publickey).
 


the apport-retrace command appears to be broken in jaunty, but here's a backtrace from manually unpacking the apport report and running gdb with the dbgsym packages installed.

(gdb) thread apply all bt full

+ Trace 213064

(gdb)"