Hi I'm facing a peculiar problem in my windows 2003 servers. All the servers are running with latest security patches. The problem occur once in a week . Problem : After logging off the username and password area in the winlogon screen grey out. It become disable and hence no logon locally to the server can be made. All other services of server are running and working fine. There is no error log in the event viewer . Thanks and Best Regards Ripon Bahl Change should only be constant for everyone.....Do it simple but do it great...