I've noticed a disturbing trend of late; more and more PS3 drives have been failing, and I think that a little preventative maintenance would go a long way at this point. Please take the time to install games with any installable content to your hard drive to help reduce wear and tear on the drive. Also, I generally discourage the use of the PS3 as a blu-ray player, as the players are pretty universally affordable at this point. The below, for example, is a Sony-branded player that can be purchased for $38.53 as of the time this was written, fulfilled by Amazon.
I promise, it's a good idea. I'm suggesting it even though my business is largely based on when these things fail, and I don't sell blu-ray players, so I promise it's an earnest plea. Please! Think of the consoles!