What would cause a nw65sp8 server w/ 2 nics to lose pings to the local

Server is built for bm39, 1 nic is public IP, other is private IP.
Server boots up, once the local nic is bound, pings work, something
during the final stage of nlm loading is causing pings to get dropped.

This was working fine all day friday, then server got shut down over
the weekend, now I cannot ping it from the local side.

Wondering if it's some kind of routing issue, but I've completely
redone the bindings, redone the routing, all to no avail.

Default route is the isp switch IP addy, have a route entry for the
local IP to point to the local router.