On a server running Windows Server 2008 SP2, we are using Group Policy to delete user profiles more than 14 days old on a mix of Vista and Windows 7 PCs. The user profile is deleted and no longer shows up in the list of profiles on the machine (under System Properties, Advanced, User Profiles). The SID in the registry is removed properly as well, but the user's folder is left behind under C:\Users. There are no files in the folders that are left behind, just empty folders. There is no consistency in the folders that are left behind on the PCs being affected. Each PC seems to leave behind a different set of folders under the user, but the folders are always empty.
I would like to figure out why the folders are being left behind and how I can make sure that the profile is completely removed, including the entire user folder.