If you are upgrading your Mac to use the new 'Lion' version of OS X - there are some issues with BOINC and QCN you may want to consider. It may be necessary to reinstall BOINC after the upgrade due to a permission problem detected. Also it appears that the JoyWarrior sensors will not be found under BOINC (although work for QCNLive). This is possibly a permissions problem that will have to be looked at. The internal Mac laptop sensor should still work under QCNLive or BOINC (after a BOINC reinstall).