How strange. I've just joined this forum (hi all) purely because i googled this problem and you guys came up first.
I was on Heavy Rain, came off for dinner but the ps3 bleeped and then shut down. When I came back to it a few hours later, it sent an error report then signed me out. Heavy Rain's trophies have gone, I deleted the update but then it just makes you redownload it again, which is fine, but then it wont register the trophies so that was that. So I popped on Peggle which then told me I hadn't bought the full game - so I guess the internal clock may well be the problem as of course its been downloaded yet if the ps3 thinks its 2000. I've moved the clock and date back to today but its made no difference. My xmb themes are corrupted too.
Doesn't it suck when it all goes a bit PC crash for a console? A shame - I'd set myself up for a great night of snacks, drink and heavy rain followed by sonic and sega all stars :(
Si