Hi Gary,
We didn't see anything like this happening in 8.2. In order to help us sort out the problem, can you please export the log? The way to do it is select View in the Console menu, then 'Task log' and you will have the logs for all the tasks that run from your Console. In the Task log menu select 'Log' and 'Export to file' - this will export the whole content of the task log to a text file. Copy and paste the logs that refer to the concerning tasks.
Also, can you run "ipconfig /all" on all the clients that weren't imaged and post the result?
At the moment, I'm interested to see the time stamp of the clone step and the MAC addresses of the clients involved.
Thank you,
Adina