This started happening yesterday... noticing long periods when I receive no e-mail, then a whole bunch of e-mail comes in all at once (or I'll notice on my PC that my inbox is loaded with new e-mails, but nothing on the phone). No other errors, I've confirmed that sync is on, etc. This only applies to GMail (I'm using one regular e-mail account that is set to check every hour). I've tried clearing the Data for Gmail and Gmail storage - this works immediately, but then the problem relapses. I should also mention this happened one other time right after I got the phone, but a quick data clearing fixed it for a couple weeks. This is a complete deal breaker, whether it's the phone or Android that's causing it. I'm 100% returning this phone next week prior to the end of my 30 day evaluation. The primary reason is to see what happens with the N1 and Incredible, but if this is an Android problem, I'm sad to say I'll have to go back to blackberry - above all, I need my phone/messaging to be *reliable*! Any thoughts appreciated.