Please find in following thread patch for hal to support updated dbus API in consolekit 0.3.
Created attachment 180814 [details, diff]
here is the patch taken from the ML.
this is in 0.5.12_rc1 already btw.
Sorry for failing to mention this in the ChangeLog, this went into patchset 4, 0.5.11-r7 (r8 is on the way).
I guess this wasn't really necessary since hal ebuild unconditionally disables consolekit support... (btw, why is it disabled?)
Please file a new bug for a new question, rather then commenting in a closed one. Thank you.