When I have your email page, ad unit on mute, occasionally ( but many times each day), the audio plays from your ads, impacting my conference calls and phone calls. I am not sure why the mute button is not working (if I turn it off and then back on it mutes, but later in the day it comes on again...). Please know this is happening if not intentional. thank you very much, Richard Chino (former Yahoo employee and loyal yahoo mail user rchino@yahoo.com)