If you have a deployment task set to run on all computers (default) and you double click on it it will deploy the avast client to all of the computers in the computer catalog. I had mistakenly thought it would bring up the properties of that task not execute it. Normally I drag the task to a user created group in the computer catalog to execute it. Hence in the middle of the day I initiated a mass deployment to our computer systems by mistake. Not a nice thing to do to your users.