Hi Neil,
To give a better response, I have a few questions related to your issues:
1. When you say that they are "Disconnected", what is the monitor displaying? Is it the NComputing logo? Is there an error message? Is it blank? etc. I would need to know more about the specific state that the stations are in. Also, what is the status in the console? There should be a status for the stations that has an error message.
Any error messages being posted to the log?
Side note: check to see if you can get the stations back up by restarting the "Multiuser" service in 'services.msc'. This could help the diagnosis as well.
2. When you get this error, are the stations still operational? Or is it required to have those reinstalls for the stations to work again? Also, what specific security suites are you running on the host (Antivirus, firewalls, deepfreeze, etc).
3. This can be related to the "Logon Locally" policy that also affects Windows XP SP3 users. Please check this posting to see if it helps you (Even though it was written for XP and Win2k3).
Salesforce
4. I will have to look into this and respond at a later time. Have you contacted Tech Support or posted this on the NComputing Forums?
Justin
NComputing