Zoom H4 Handy Recorder "rec memory" Questions

...rec card protected comes up? Take out the memory card, there is a little switch on it. One position is protected which means you can't record or delete anything from it, the other position is normal ...

...rec the 3rd trk This use to happen when i had all banks filled with samples and set to mute groups so it was understandable alot of stuff going on machine couldent handle it,,but now it does it with ...