Disc freezing/error code 80029941?

So I picked up a PS3 from a friend of my friends about a week ago, and on friday night I went to watch a blu ray with the lady and got about 15 minutes in and the whole thing froze.

I shut it off, restarted, and tried again and was met with error code 80029941 invalid disc error. Now this was a brand new, store bought Blu Ray, no scratches or anything. So I tried furiously for a good 15 minutes to get it to work but I would either be met with the error code or the disc would just refuse to load, or freeze during loading..

Tried again tonight, selected the scene I left off at, once again got about 10-15 minutes in with no issues then it froze, tried restarting again got to the disc menu, tried selecting where I left off last time and then it froze, after that I would either get the loading error or I couldn't get past the THX opening advert.

Seeing as the disc is loading, I'm really hoping this doesn't involve sony and it's something like over heating, or it needs to be cleaned...I am updated to the latest firmware...is that an issue?

Well I actually get 10 solid minutes of the movie playing when I first start it up. and I've been starting it from the point I left off from every day so it's not the blu ray...the fact that it gives me 10 minutes of movie before freezing everyday just seems weird...the second time around it will either just not load, or get to the scene selection page then not play the scene.

I have the original receipt now, it's just really roughed up, hard to make out anything on it, but it's clearly a PS3 for 399 a long with some other items.