Hi I have a BDP-1500, I have been having lots of issue with it. Some problems have been fixed with the latest firmware.090105_01_BDP1500_XAA.
The Biggest problem I have now is when playing regular DVD's (ex: DAllas TV series Season's) when i insert the disc I get sound crackling when the menu is loading or I get no sound at all. I have to shut off the BDP-1500 a few times until i loads without any problems.
Please let me know if this is a know issue, it is really frustrating.

Chowhound
Comic Vine
GameFAQs
GameSpot
Giant Bomb
TechRepublic