I've just recieved this problem when the proxy is loaded (NW6.5 SP3) BM3.8SP3

Cache is using 512 directories (configured with 512) on 4 volumes
Cache successfully initialized with 0 objects (0 files ignored).
Initializing SAS ....
Waiting for Directory Services to initialize before SAS login.
Waiting to read the SAS context from NDS.License Auditing Service Module

TCP/IP Addresses Bound On This Server:
Configured Services:
Proxy Requesting Client at all TCP/IP addresses:9491
HTTP Proxy at TCP/IP address XXX.XXX.XX.XXX:8080
HTTP Proxy at TCP/IPX address 0F670888:000000000001:1F90
** Error ** Register error 48
(possible fix: load ipxf.nlm and reload proxy)
Proxy SSL Listener at all TCP/IP addresses:446
MiniWeb Server at all TCP/IP addresses:1959