With polkit version 0.106, .rules files are used instead of .pkla files, see http://davidz25.blogspot.com/2012/06/authorization-rules-in-polkit.html for more information. Therefore, please port the file /var/lib/polkit-1/localauthority/10-vendor.d/olpc-overrides.pkla to use the new format. If you have any questions, I'm subscribed to this bug to help. Thanks.
Thanks for the good documentation. Fixed in PolicyKit-olpc-1.7-1.fc18