When you logon to the domain from your WinNT Workstation, the logon script doesn't work, loops, and may hang the server.

If you have a net.bat or net.cmd file in the Netlogon share, it is executed every time you invoke a net command in the logon script. Since the current folder is checked first, your net.bat (or net.cmd) is run instead of %SystemRoot%\System32\Net.exe.

Rename your net.bat or net.cmd.