In about half of the games I play, I find that the "Mines Remaining" count in the top right hand corner has dropped to 0, but there are still places in the field where I need to mark some mines! So the game is unfinishable.

When this happens, I've scanned the whole field for any unnecessary flags, and I'm 99% sure that there aren't any mistakes there.

Does anyone else see this?

Regards - Neil