hlrom,
I'm sorry to hear that you're having this issue.
Are you adjusting the volume on the TV? Or the receiver when this happens? Also, is the picture going through the receiver, or is the TV's output for audio connected only?
Some receivers do have firmware updates also - it may be worth checking into.
--HDTech
I have a Samsung LN52B750 connected to a Denon receiver. All was well for the first year. All of a sudden, when we change the volume the image disappears for a couple of seconds. They are connected via HDMI and I have tried using a different cable.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic