I think I have encountered the phone issue but it is not a major one. When ending a call, I take the phone from my ear and the screen is blank. The proximity sensor realises it is not next to my ear anymore and displays the screen - but the screen shown is the desktop and not the phone program. It takes another second or two to switch to the phone before I can press END, and sometimes it rotates as I go to press it so I end up having to press it again for it to register.

Annoying, but not the end of the world. Does this agree with other people's findings?