My opinion with you is send to Sony if it is under warranty. Please send to the appropriate Sony channel base on the model of your PS3 ( which country ) I personally own 1 unit of PS3 from Singapore. The system had the same problem - twice.

- First incident happen, brought the unit back to Sony S'pore and the change the Laser module. It works for about 7 months plus.

- Second incident was the same problem, I sent back to Sony S'pore. The have check the system and with my complaints. The replace another unit of PS3 for me after a week.

- ( touch wood and the system work till now so far )

I really understand how you feel and It is really troublesome and it is really disappointing for such an expensive game console for Sony.