I,ve got all three dlc installed and they've been playing fine , lags a bit sometimes but not a problem but lately when i go to save it freezes and then i have to switch off my ps3. Its done it about 5 times now today, im doing the Waking Nightmare quest and it seems to freeze in the same place everytime just after i awake from dreamstride and also in room with the skull is there anything i can do to fix this?

There's a known bug with that quest which makes the game freeze if you save during it. Solution: Don't save during that quest.

i just did this quest last night, having a preknowlege of the glitch i just saved before i entered the temple and didnt save once while inside, i was able to complete the whole quest without problems(and thankfully no deaths lol)

so the trick is dont save at all while inside the temple, make sure your auto-saves are turned off as well

I had this after getting the Skull of corruption. I had to turn off the Ps3 and turn it back on. It stopped happening after a while after getting out the fort.

TURN OFF ALL AUTOSAVING AND DO NOT SAVE. IT WILL SAVE AFTER YOU EXIT AND AFTER THEN IT WORKED FINE FOR ME