I am having a problem with LSASRV / SPNEGO errors (Event ID codes 40961 and 40960) appearing in computer's event logs. There is no precursor to them happening. Users come in one morning to start work and it will take 20 minutes for the system to log them on. They hit CTRL+ALT+DEL and enter their username and password, and then the system hangs for a very long time before eventually logging them in. Outlook will not connect, and they cannot seem to browse to other systems. They can get out to the Internet via web browser, and have no problem using Outlook Web Access. It appears the problem is with local network resources that require the successfull processing of credentials. We use SBS 2003, by the way. Stranger still, it is affecting just 3 computers that are all located in one section of the office.
I have read several posts where others have "solutions" but nothing seems to work. I've tried the following as well as other random tasks:
=Move the computers to data jacks in other areas of the office that are working fine with other systems
=Remove the computer from the domain and re-add it.
=Try a user account that is working fine elsewhere
=Make sure the time is synched with the DC
=Upgraded the NIC driver on the server (someone mentioned this as a solution)
=All updates and patches are applied to all machines
=Reinstall networking components
=Ensured proper DNS settings on the server
=Flushed DNS on the client machines
Have missed anything? Why does this keep happening randomly to systems around my network? I am starting to become convinced it is a Microsoft issue, perhaps a faulty patch or update they issued and haven't acknowledged. I am open to ANY suggestions-- please let me know what has worked for you in this case!