Audio sound loss after downloading iOS6 on my new ipad

After a few weeks of downloading the new software update- iOS6 i've noticed a sudden change on my games...some games loss their sounds and begun to hung up...so i deleted them...just recently when i've noticed my audio sound was gone..no game sounds,can do facetime,yahoo videocall,and skype but i could'nt hear them they can hear me though...went to youtube for tutorial how to troubleshoot it but all things were useless...to the point that i have to reset back again and its still the same...Can anyone tell me what to do?