I know or think I know it is part of Media Centre but yesterday it got to 700 meg download and I then stopped it and today it got to 500meg and I thought, that enough puppy until I know why MCE host is downloading so much data, it wont be allowed just in case. Funny thing is, it seems to be junk or at least I have no idea where its going. I run 7 64 Ulrimate and stopping it does no seem to have a detriment effect on my PC. Basically what is it and why is it downloading data in such large quantities. Just to add, when it downloads it maxis out my connection.