I have a 4 node OES linux cluster. We are having problems with our NSS resources. A resource will be running, and all of a sudden workstations can no longer map a drive to it (we map using ip address/volume) other resources on the same node continue to work fine. So we attempt to migrate the non-functioning resource to another server, and it hangs in the unloading state, won't finish unloading, we have to restart the node to clear the state.

This has happened on all 4 nodes. NDS is healthy, not sure what else to check. Any suggestions?