Couple of days into ownership of a SGS2 and although I consider myself to be pretty confident in using PCs and phones, I am struggling to get my head around the memory/storage setup on this thing. As I understand it, I have 16GB, of which a section is split off to be (let's call it) SYSTEM - where the OS lives. Then there's 2GB split off to install apps in. That leaves about 12GB which the phone calls "usbStorage". When I slot in a memory card, the phone calls that an external sdcard. No problems. When I plug the phone into my PC, I get to access "Card" and "Phone". All good so far. Makes sense. But what makes no sense to me: (a) when I browse "Phone" on my PC, there are a whole load of folders. One of which is "usbStorage". So WHERE are all the other folders? eg, "media"? (b) why can't I copy and paste .jpg files from my PC into "usbStorage"? It gives an error saying "The device does not allow files to be placed in this location". Okay....so I have 12GB of space in "usbStorage" and can't put anything there? It's certainly NOT very clear.