Unhappy [Q] ( Q ) Don't hear or say when call

I flashed CM 10.2 stable last week , after use about 2 days , i recognized when i call ( or using app: Viber, Tango,..to call) don't hear or say anything .. After i reboot my phone, my phone return normal , but after about 1-2 hours my phone still have problem about call as i had said .Does anyone know how to solve it?help me ,please ...