On a Vista system using Windows Mail, I noticed that ESet NOD32 seems to create duplicate .eml files for every mail message scanned (sent or received). It places these files in: C:\Users\<profile>\AppData\Local\Microsoft\Windows Mail They never seem to go away - taking up a lot of space over time. Is this normal. I searched high and low for other people having this problem with no luck. I'm using the latest version 3.0.672.0. Deleting these extra files seems harmless.