logging in to the account failed because an error ocurred
This has just started to become an issue as we have just started using OS X more now.
I have an OS X server connected to the AD domain and it also hosts the Home dirs on the XRAID over AFP for the AD users. This all works fine apart from some random times when the login window won't authenticate anyone, or so i thought. I had a machine where i could log on as my own managed network account and i thought that maybe the problem lay with the amount of connections to a single afp share since it usually affected the pupils. I then tried a different staff account only to find that that one also failed to log in receiving the thread title as the error message. I don't know what is causing the problem since when i restarted the machine it failed again but upon the second time it worked OK.
I have not specified a preferred DC in the AD Directory Plugin. Could this be the reason. Plus it also doesn't help when the other DC is being a sh*t and keeps losing network connection every 5 minutes. It may well be this...