Franknbeans
Newbie
can't imagine it would be a setting in Gmail since it worked flawlessly before.
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Yup, I would do a factory reset. You won't lose anything stored on your SD card (pics, music, etc.), you can reinstall all your apps after the reset, and your contacts, calendar, etc. should resync from google (just give it some time after the reset, should only take a few minutes). Just make sure all your contacts are saved as "google" contacts not "phone" contacts.