Well I just loaded a new App and the mic level part of the functionality of the App played back as quiet as anything.... I want the convenience of the onboard mic and it was fine a week ago BEFORE i updated this machine to 4.3.3. Skype is now useless, Shazam and the new App... Plus Garage Band.
A google reveals others reporting similar but only on non 3G units they say.
A reset or cold boot has done zippa nadda.
Ideas anyone..... TIA Pete:-)