All of a sudden my regular microphone and speaker don't work. I can't make any noise or receive any noise at all.

If I plug in the headphones it works fine, same with switching to speaker phone. Right now I'm running 1.1.3 vanilla, but I upgraded from a jailbroken 1.1.2 that was having the same problem, hoping that the firmware would correct it.

I'm praying this isn't a hardware issue or isn't too hard to fix- happened all of a sudden.