Am having the same problem...WD do not seem to understand that i only want to delete redundant backed up files/folders.
It would appear that this is impossible, the only solution they eventually gave me after 3 attempts at contact was to format the drive (my book). This means that all backups are deleted and as I also have Windows7 system image & Acronis image backups on this drive it means I will lose all of these as well.
I am now in the process of ditching the "smartware" (is that an oxymoron?).Can anyone tell me how to remove the hidden partition that carries the smartware I dont want to leave any traces of this rubbish behind.
Many thanks in anticipation.......