Just upgraded domain to W2K from NT 4 using the PDC upgrade method. When logging in to a W2K Pro workstation with a userid that has membership of three or more security groups, the computer hangs at the "Setting your personal settings" dialog box. No problems with userids that has memberships with 1 or 2 security groups nor with logging in to Win98 and WinNT4 clients. DHCP, WINS and DNS seems to be working properly. Security settings in the Default Domain Policy was never changed and security settings are correct according to several articles in Technet. Once logon is successful, everything works fine. Am I missing something? Anyone? Thanks in advance.