plasmashell shows 100% CPU since last friday update of frameworks-unstable
repo.

This can be seen starting from yakuake after having plasmashell killed:

xx@linux-6mz9:~> plasmashell&
[1] 4491
xx@linux-6mz9:~> kf.plasma.quick: Applet preload policy set to 1
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:70:5:
QML Connections: Detected function "onConfigurationChanged" in Connections
element. This is probably intended to be a signal handler but no signal of the
target matches the name.
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:70:5:
QML Connections: Detected function "onRepaintNeeded" in Connections element.
This is probably intended to be a signal handler but no signal of the target
matches the name.
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:67:
TypeError: Cannot read property 'wallpaper' of null
file:///usr/share/plasma/shells/org.kde.plasma.desktop/contents/views/Desktop.qml:71:
TypeError: Cannot read property 'wallpaper' of null
file:///usr/share/plasma/plasmoids/org.kde.plasma.notes/contents/ui/main.qml:152:13:
QML TextArea: Binding loop detected for property "implicitWidth"
org.kde.plasma.containmentlayoutmanager: Error: cannot change the containment
to AppletsLayout