[Samba] slow wan to wan samba connection

[scott]

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?