I was getting the same message. You cannot "fix" this in the game. You have to "fix" it in your PS3's menu, under settings.
What I had to do was turn off Daylight Savings, and all was good. Oddly enough, I am GMT -07:00 but my time was still off an hour. I turned off Daylight Savings, and my time corrected itself. Went back to the game, and the error message was gone. I haven't had any issues since.
Hope this helps.
I had the problem I just set the time on ps3 allowing it to get the time from the I Internet.
Does your timezone match your account type? For example, if I am -07:00, I had better be using a US account, for example.