I also have had this problem for about a month--I went into my sessions & disabled beagled / beagle-helper ---seems to not made a difference to my system--will enable them with the next update to see if there is a change.
-- beagled-helper loads CPU https://launchpad.net/bugs/64326 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs