2006 Subaru Outback rough idle and stalling

No no one has mentioned this yet. I finally to it to the dealer to have it checked. I have read about several things that can cause this. Some include: ECM/ECU Reflash, MAF sensor, Idle Air Control valve, Vacuum leak, Fuel Pressure problem. Do any of these sound like they are of valuable consideration? We will see what the dealer finds tomorrow. I will post with his diagnostic findings.