You're not alone Mikeeesf, I've had this since 03:00 GMT today. I usually squeeze in a remote race before going to work, and collect my ill-gotten gains. A pop-up appeared though, stating something about not being able to connect to the server, so I thought it was another server patch being run - the time was about right. It hung on the first GT screen (where you've got Arcade mode and Couse Maker) offering no pointer or functionality.
I rebooted the game, got to GT Life and was awarded the usual paint chips and Museum cards - so guessed that the server side of things had been sorted.
Trouble was, it started hanging between screens, showing me all my Bobs and the money thewy'd accumulated, but I couldn't get any of them to load. Abandoning this, I went to work and hoped all would be okay by my return.
Now that I've been back a few hours, I've tried to get the game to load. Sometimes it does so, but gets no further than GT life, the rest it hangs before or on the first screen mentioned above...and all the credits previously showing under each BOb, they've now gone.
I checked about but as no one else seems to have any of this, I guessed it must be at my end of things, something to do with the game save. It's fine with any other game I've tried - business as usual.
EDIT: Now the credits are back but it's taking a long time to move between screens, then it's normal again briefly. That doesn't sound like a savegame problem to me.