Favorite tray; icons gone missing ?

I posted this on the intro section by mistake, so sorry for that.

I have been having a problem since yesterday - only 'phone' is appearing in the favorites tray. MISSING is People, the 'All Apps' widget icon, Messages and Browser.

I have tried BUT can't re-instate these icons / apps into the favorite tray. In fact I can't see most of my apps, only the one's on my home screen.

FRUSTRATED !! :rolleyes:

Cheers Alan