Canon 60d common fault

If you google "canon 60d Write Protected", you'll see a number of complaints about this, but it doesn't appear to be a widespread problem. With just about any product, you'll find some people who have trouble with it. In the 1.5 years I've had my 60d, I've never run into this myself using a Transcend 16GB class 10 card that I always take out for downloading.