More Kindle Problems
I've plugged it in again over breakfast, and half an hour later it seems to be half charged already.
So...I deduce from this that just because the amber light is showing it doesn't mean that my Kindle is being charged.
I can't help thinking that an Apple product would never have this design failure - but then it would also be a lot more expensive too.
Update: the Kindle is now recharged. I think I'm going to have to make sure it is thoroughly plugged in, in future.