This is the third time it has happened to me. This time I had a camera nearby so was able to click it.

The Peoples Hub and the People/Phone tiles. pinned to the start/home screen just all go missing at the same time.

I have to go and pin them all over again.

Another annoyance I face is that on an extended call, after I wish to end that call, I find that the screen has just gone black and I cannot even get in back by clicking the Power button. Only if the caller at the other end hangs up, does the screen light up again. If it still doesnt I just have to restart the phone.

Wonder why !? ... Anyone facing this problem?