I have bt sync running on osx, xp and ios all with no problems; except that the XP machine won't go to sleep whilst its running. Has anyone experienced this before? My hard disks are set to turn off after 30mins and the computer sleeps after 45mins of no use. Is it as simple as having to drop the hard drive sleep time below the max sync time preference? Seams the computer should go to sleep ignoring this 'background activity', or is that the issue; it's not seen as background activity? Should it be i.e. a bug? Thanks.