No Sync between picture and sound

For the past several days - ALL CHANNELS on my Comcast Cable feed (Westminster, MD) have had the video and audio operating in different time frames.  The audio is being heard about 3 second BEFORE the video to which it corresponds.

I makes no difference if the source is an 'over the air' local channel or if it is a over the satellite channel.

For this I am being charged over $150 a month.