Just thought I would post as I'm now seeing the same behaviour as initially reported - rate a film within the game, then a little while later the same film shows up, still with a predicted rating despite having just been given one (and, if you click on the movie picture in the game to bring up it's entry in the main window, you can see the rating it's been given).
It sounds from your earlier posts it might be a numbers issue, I've got 390 movies rated, and it's offering predictions for 690, but it's certainly still offering up movies regularly that I've seen but not yet rated. Restarting the game stops it for a brief while, then it always seems to start again
Just done it again (with 'how to train your dragon'), rating it a second time still caused the 'rated' number to go up by one (didn't notice the first time). And again, (with 'butterfly effect'), rating it the first time, and the second time, both caused 'rated' to go up by one...(which leaves me a bit worried that I'm corrupting my database in some fashion).
Hmm. To add to the confusion, playing it again now, it seems that sometimes the rating doesn't 'stick'; I'd just rated 'Johnny Mnemonic', and then it popped up again a couple of rounds later, but this time clicking the picture to bring up the main entry, it just had the predicted rating again...
just edited to add - also now it's brought up a film with no predicted rating at all ('slumdog millionaire'), which I hadn't seen it do before...
not sure if any of that is of any help