I have a samba file server running as the pdc for a network. There are 5 different subnets that connect to it over ptp t1 links using cisco routers. It has ran just fine for years until now. Local traffic to the file server is flawless. Traffic over the other non-local links has come to a halt for some reason. You can browse down a few directories but after that it just kills windows explorer. All the pc's have the samba server as the WINS server also and DNS server. Any help why the non-local networks would act like this?