2 - blank the other screens in a multihead / xinerama setup
3 - progress bar instead of counter during the break
5 - when no image path has yet been entered, default to a reasonable KDE path
6 - when no image path is entered, do not display a gray widget, but one with a button "set images path"
8 bugs (this is where you can help ;-)):
9 - image extension are hardcoded
10 - Adriaan reported a case were the countdown was painted over the previous time, making a mess.