ps3 error 8001050f when i try to play games PLEASE HELP?

[littlepocket305]

so today i got cod mw2, i felt all giddy i played a little and decided to give it a break, i come back after setting up my cousins computer and playing mw2 at his house to play some at home, unfortunatly when i try to play it says Regestration of the trophy information could not be completed the game will quit. ( 8001050F) so i delete my game files and re update, but it did nothing ! plus my trophies are now deleted, Sony you better fix this shit NOW!!! or you better give my money back, for now i will play my xbox 360 and sony will have to drag me back as a customer, SONY FIX THIS SHIT! further more when i try to log on to psn the same shit happens 8001050F, i think this stands for 8001050Fuck sony. IT seems my friends dont have that problem, is this becuase of thier ps3 model or what???