AutoCAD Architecture :: Autodesk 360 And Broadband Usage With 2013?

Have been using ACA 2013 all last week (normally do most of my work with Revit) and this time its been used intensively since install. I noticed that Autdesk 360 was doing allot of syncing. Drawings are open all of the time so the syncing activity is continuous.Then I found that over the last week broadband useage generally is clocking up to 11Gb per day (I get 60 per month), other browsers were slow and I think I have traced the problem to Autodesk 360 - it stoppped as soon as I disconnected from the cloud. It seems there is a huge amount of up and down stream data - turn 360 back on and the router lights start flashing furoiously. The cloud storage is less than 1Gb.