Comment 2 for bug 322172

I think I have the same problem, anyways it causes acpid setup to fail:

"invalid option -- 'l'" seems to be the problem

I also can no longer suspend/hibernate - I assume due to this.

ps@lapi:~$ sudo dpkg --configure -a
Setting up acpid (1.0.6-9ubuntu4.9.04.3) ...
 * Loading ACPI modules... [ OK ]
 * Starting ACPI services... /usr/sbin/acpid: invalid option -- 'l'
Usage: acpid [OPTIONS]
  -c, --confdir Set the limit on non-root socket connections.
  -C, --clientmax Set the configuration directory.
  -d, --debug Increase debugging level (implies -f).
  -e, --eventfile Use the specified file for events.
  -f, --foreground Run in the foreground.
  -g, --socketgroup Set the group on the socket file.
  -m, --socketmode Set the permissions on the socket file.
  -s, --socketfile Use the specified socket file.
  -S, --nosocket Do not listen on a UNIX socket (overrides -s).
  -v, --version Print version information.
  -h, --help Print this message.
  -L, --lockfile Use the specified file to lock the daemon.
invoke-rc.d: initscript acpid, action "start" failed.
dpkg: error processing acpid (--configure):
 subprocess post-installation script returned error exit status 1
Errors were encountered while processing:
 acpid