Specifically, the title is ET. Unfortunately I don't have any other discs to check against as I'm in the middle of moving house and everything is packed away.
Anyway here is the memory usage showing in task man. I've actually seen it go well over a gig.

BTW Buffer size is already set to 256 rather than auto based on other forum topics, no change though as far as I can tell.
OS is W 7 fully up to date.