Question about audio in HDMI cable?

I was wondering if HDMI cables come with built in lip sync. I have a Dish Netwok HD reciver.And recently noticed that the lip sync is slightly off.The audio is slightly ahead of the video. It is barely noticeable. But annoying none the less.I have the Sat receiver hooked up to a Phillips audio receiver. Using RCA cables from the Sat Receiver to the audio reciever. But the problem is when i am using the TV's built in speakers. So i dont think it has anything to do with the audio reciever. Could the problem be the HDMI cable or the Sat receiver signal? This was not an issue until a few days ago. The only thing i have changed is . I recently hooked up the audio receiver. But the issue is with the TV speakers.And the audio receiver is off. So i dont think it is the recently connected audio receiver. Any help is appreciated. Thanks