I was out all day getting some practice, and attempting to start a simple, themed project I have in mind at the same time (might as well try and pull something together, even if I am only learning for now). After a while I was pressing the shutter to take a pic but nothing happened. A message appeared on screen and in the viewfinder R10, I had a wee look into that and I figured that's the camera letting me know how many pics I can fire off before it can't load anymore. My assumption is the two are not connected. Would I be correct to think that? I spent some time deleting older pics from my memory card, I had just shy of 300 pics on it (apx 150 fine-jpegs plus 150 RAW-Fine, I suppose that's 450 in total really), eventually the shutter started working again and I could snap away quite happily. My memory card was thrown in as a bonus when I bought my camera, so I'm assuming it's ok but not brilliant; it's a 'hama 16GB, R45mb sec' and it has HC 1 stamped on it as well. As far as memory cards go, I haven't a clue, but I have an inkling that as it is digital information there must be some sort of transfer time between camera and card. Not sure though. My questions are; 1) Is the R10 message and the shutter apparently not working related? 2) Was it simply a case of my memory card not being up to the job? Therefore the camera will not let me take anymore till the card catches up. 3) Does it sound like a known problem with the camera (shutter count is only around 1100), Nikon D5100. 4) How can I fix it so it doesn't happen again, or at the very least be able to know how to solve it if it does? I was shooting in manual if that helps. Also, I haven't dropped it or anything either. As ever, thanks in advance for any advice folks, it's really appreciated.