I have been trying to track this problem down to a specific source, and I think I'm really close to it now. We have been having the following problems: 1) When logging into a computer, it states that it can't map the network drives. 2) Computer is not applying some or all of the group policy objects. 3) When Error #1 occurs, another noticible problem is that you are completely unable to change the domain. Sometimes you can't click the Rename option... sometimes you can, but then you can't select workgroup or domain. 4) Computers are entirely unable to browse network. I attempted to connect to another share, and it kept asking me for a login box. I was using Administrator credentials, and even when typing them again it wouldn't allow it. All 4 of these problems, and I actually believe there are more, can all be resolved simply by restarting the "Net Logon" service. 95% of the time it is in fact started, however restarting the service corrects ALL of these problems. Is there a way to update the service per se, or perhaps restore the service to it's original function? I don't know how these problems are sporratically spreading, but they are to a select few computers. There is no rhyme or reason to it.