blu-ray player/PS3 problem ??

[Armorales102]

Hello, i recently started having problem with my slim PS3, ive had it for 2 years and have never had problems with it before but just the other day some blu-rays started skipping on it. This started happening a few days ago (with The Office: season 8 and Killers).
The next day i bought a new blu-ray player (LG BP330), The Office: season 8 played flawlessly but Killers continued skipping.
I plugged in my PS3 today to test a few more blu-rays before i got rid of it and all the blu-rays that i tested today played fine from beginning to end (Jackie Brown and Deep Blue Sea)
im a little confused with whats going on, im assuming Killers is just a defected disc but i dont understand why The Office season 8 wont play on my PS3.
Has anyone had trouble with these movies before?
do ps3 maybe struggle playing flipper blu-rays? (The Office season 8 is double sided, blu-ray and dvd)
all the discs are in perfect condition by the way

oh also i forgot to mention that when i bought The Office season 8 originally the first disc wouldnt play on my ps3 so i exchanged for another copy but this time the 2nd disc wouldnt play on my ps3. that's why im thinking ps3s might have trouble reading flippers. this was my first time playing a flipper on a ps3.