I am running snow leopard 10.6.2 on a imac G% and we work on a network from a PC external hard drive. We are suddenly having problems with folders, whereby if a new folder is made from the mac (on the external hard drive) then no one but that mac that made the folder has access privileges. Even our other mac can't seem to access the folder, so if any mac makes a folder no one can access it. Does anyone out there have the same problem? Please help.