Hello all, I have had this problem on both the Motorola Xoom and the Acer A100. If I hook up my Android Tablet to my Exchange server (Exchange 2003 Front End OMA with SSL key) emails and contacts sync nicely. Calendar won't sync, but that's another well known problem. My issue is this: if I leave my Xoom or A100 in standby at night, charging, it will connect to my Exchange 2003 server and download HUGE amounts of data. My entire mailbox on that Exchange Server, including all emails, calendar, and contacts, is only 1.5 Gigs, but in 3 days my A100 downloaded over 90Gigs from this system! What is it doing? Anyone else experiencing this?