Oho, I spoke too soon.
Immediately after filing this bug report I went back to the terminal window and noticed it too was full of these odd error messages:
salisbury:~$ ubuntu-bug apport salisbury:~$ Error: Couldn't find per display information
###!!! [Parent][RPCChannel] Error: Channel error: cannot send/recv
Error: Couldn't find per display information
... etc. another dozen lines or so ...
So, maybe not the linux source package, but rather apport or perhaps even firefox?
Oho, I spoke too soon.
Immediately after filing this bug report I went back to the terminal window and noticed it too was full of these odd error messages:
salisbury:~$ ubuntu-bug apport
salisbury:~$ Error: Couldn't find per display information
###!!! [Parent] [RPCChannel] Error: Channel error: cannot send/recv
###!!! [Parent] [RPCChannel] Error: Channel error: cannot send/recv
###!!! [Parent] [RPCChannel] Error: Channel error: cannot send/recv
Error: Couldn't find per display information
###!!! [Parent] [RPCChannel] Error: Channel error: cannot send/recv
... etc. another dozen lines or so ...
So, maybe not the linux source package, but rather apport or perhaps even firefox?