I have a full drive (Samsung 750 GB) shared in lan. I have noticed that when sb from lan is copying sth from it, my RAM (4GB) increases to allmost maximum 3.78 GB. I found out that this "some body" was useing Nero - to burn a movie from my shared drive directly. I changed the cashing to - no cashing, but the problem wasn't solved. The problem desapear only if unsharing the drive.