I have a dell latitude E4440 laptop. It was brought to us for a separate issue regarding Dell Data Protection. After decrypting the hard drive and removing all encryption related software, I started noticing that the machine was not logging on to the domain when it was not connected to it. I would keep getting the "No logon server" message. After removing the device from the domain and Active Directory, as well as renaming it, I am able to get in, but it takes very long time to logon when it was disconnected to the domain. I clocked it at 1 minute 45 seconds. This is on a Windows 7 PC, 4GB RAM and an i5 Processor, so the machine hardware is not the issue. When the machine is connected, I can successfully logon within seconds, force group policy updates and confirm that the machine is hitting the local DC.
Any suggestions are welcome.