just for poops and grins try SBF'ing back to stock and see what happens. If your going to take it in to VZW your going to need to do that anyways. It's odd that you have two diff speakers not outputting sound. My first DX at launch had the speaker buzz i had to exchange it a week later after that i was good.

 

try reflashing .595 and wipe data and cache, no need to sbf

 

of course if the problem persists then you can SBF to froyo as trophy suggest

 

tried a *228, option 1 or 2 yet?

 

Same exact problem for me too this morning. Will try *228 and such before SBF. Odd that it happened to more than one of us at the same time. Calls still go out and they can hear me but I hear no audio in earpiece or speakerphone.

 

*22899 fixed it for me. Odd because it was working fine before this morning and my last 228 was about a week ago.

Dunno if VZW tried to send a silent update or what caused the issue, but (at least for now) I'm back to normal.

 

Same thing happened to me on a froyo rom. I called and had a replacement sent because it had to be hardware. I SBF so I could sent my old one back in. Just for giggles I let I try to dial the activation and my speaker/mid was working perfectly. So if a cache/wipe doesn't wok. I can confirm that a SBF will work.

 

don't know that the *22899 is the long term fix

something is jacked up in Froyo about that, but no one knows what it is and no one could recreate it on a regular basis. mine tended to happen after I had rebooted.