Support yahoo email icon gone in notification bar???

Anyone else having this problem? I get the email, my phone still makes a sound......but it doesn't show up in the notification bar. The little Yahoo! icon is gone.

Does anyone know how to fix this? I've read around on other forums, but no one seems to know how to fix it. And no......I'm not the only one having this problem. Seems to be pretty common as of a few days ago.

Thanks in advance for any input or help.

 

Anyone?