[Samba] restricting concurrent logons

[dxd at dariux.net]

Hello.

Is there any way to prevent user "billyg" from logging onto a samba pdc more then once? 

Or perhaps is there a better way of dealing with the following scenario:

Consider this, "billyg" logs onto the domain in the morning, creates volumns of work, then decides he needs to scan a picture so then logs onto the machine with the scanner, meanwhile, his computer obiediantly follows instructions given to it by the befuddled system administrator and automatically logs "billyg" off after N minutes of inactivity (by means of winexit.scr). After "billyg" has completed his scanning he logs off, returns to his [primary] workstation and naturally logs back into it, only to find out HE HAS LOST ALL OF HIS MOST RECENT WORK. oh the horror.

Alternatively, he scans his picture, saves it to My\ Documents and logs off before N minutes has passed. He returns to his [primary] workstation, finishes up his work and logs off before leaving. The next morning "billyg" wants to set his recently scanned picture of Nuffles, his pet hamster, as his background image. He double-clicks My\ Documents only to find out HE HAS LOST THE SCANNED HAMSTER JPEG. oh the horror.


This was my experiance while testing logons with roaming profiles.

It would seem though, if roaming profiles could be used for the initial logon, and subsequent logons used a local cached profile then [important] data would not overwritten like in the first-part scenario. The plus side is that there is a default message explaining to the user that they could not connect to the roaming profile and that a local copy will be used instead. If this were to happen "billyg" would instinctively save Nuffles.jpg to his "home" drive. 

Why not use the "home" drive for all data? "billyg" has a laptop, and using roaming profiles is a very easy way to get his current projects onto the server for backup and synchronizing.

I am dealing with the combined inherent weaknesses of both the software and my users.
At least the software I can reconfigure.

Any suggestions?

-dxd
Darius Xerxes Desiderio