we have a 2000 domain with AD and group policy running-- however the logins take a tremendous amount of time - we have disabled the virus scan - check msconfig for startup- deleted cached profiles-- deleted user accounts-- we even did the suggestion from this forum to enabled the "always wait for the network" in group policy on the local box
doing all of these tasks did not help in any way-- the logins can take up to 2 minutes to apply.
the errors we were getting are userenv, 1505, 1053
were also getting and auto enrollment error eventid 15
we also disbaled the background intelligence transfer
we have had this issue for about 4 months