oddly enough the dame thing happened to me..though just with Resistance 3.....I never really solved the problem myself it was only when my PS3 broke(disc drive failed) when I just did a complete format of the system's harddrive traded it in and got myself a new system.
you might have to just have to live with the corrupt data.. i did for Resistance 3 for about 3 months...if all your games are doing this then I'd suggest buying atleast a month of PS+(if you don't have it already) upload all your save data to the cloud then do a complete format...if the problems still continue then you might need to get a new harddrive








