I am having a similar issue.
I have a network of ~150 computers that are running activated versions of Avast for Business version 12.1.2512. As of yesterday, my online management console is showing 8,351 computers on the network. All the duplicate results are clones of computers that are running Faronics DeepFreeze clients. They seem to re-add themselves to the management console every time they restart. I have tried running avastclear and reinstalling on all of the computers and is not stopping the cloning process. Has anyone come up with a solution to this problem?
Thank you for your help.