So i've stolen my dads laptop and did some research since the PS3's browser sucks.
turns out my hard drive, a seagate 500gb blah-de-blah....
SUFFERS FROM RANDOM FAILURE!
Of course seagate denies and crapo, which is awesome.
So I think its safe to say my hard drive just randomly failed. Fun Fun.
Thanks for your help everyone, i'm gonna go burn my computer in a ceremonial torrent of anger and devestation.