@Onlock - It's a 250 or 300 GB drive I think. It says around 160GB is used, but I can only count aroun 50GB of data in total. I wouldn't be surprised if it reserved some space, but not that much. Fairly sure something's messed up. It makes me wonder if some of it could be game demos I've downloaded and then deleted before installing or something like that. I've done that quite a lot before.