Follow along with the video below to see how to install our site as a web app on your home screen.
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Try this (if you haven't already):
Go to Power Control widget (in Apps). 2nd icon from the right controls sync/refresh or whatever. If it isn't highlighted, Gmail doesn't check mail in real time. Something like that.
My gmail's working fine. Try rebooting your phone. That usually clears up emai/sms issues for me.

My gmail's working fine. Try rebooting your phone. That usually clears up emai/sms issues for me.
Did you add any new apps recently?
Yes. That's what I would do. Sorry you have to go through that, but better that than a hard reset.