I have a PC running Windows 7 that is connected to four NAS boxes: 2 Synology and 2 Netgear. Recently, one particular share has taken to filling up all the available drive letters thus replicating its share until there are no more available letters. I have tried disconnecting them and rebooting (it was suggested this would force sense into the registry) but it still keeps happening. It is always the same share and only on this one PC. Any ideas?