I also was puzzled about this icon
It tells you that the sound for notifications is totally muted. Go to Settings and select "Sound & notification." You should see the "Notification volume" selection bar among three volume bars. Easy fix. I searched and searched and finally figured it out...
None of the pictures in my stock email account are visible since my Nexus 7 upgrade to Kit Kat. It is very annoying, to say the least. I have a ten inch Toshiba Thrive and the pictures are available with no problems. Does anyone have a fix?
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