I have random users that receive an account lockout. Have not been able to identify a pattern. The users all swear that they are not entering the PW wrong. After account lockout is cleared it may lock again at any time (days or even weeks after). My System -- Multiple Master WAN, Ethernet 10Mbs, NT 4.0 w/SP3, Exchange, W95 and NT4.0 WS Desktop(problem happens to both), Novell Servers, MS Networking client and MS Novell client.