Since RC8 I've noticed a bug where the applets for matchbox die and disappear when changing screen resolution. This occurs when running xrand -s 0 and xrandr -s 1.
The only workaround Ive found is to do the following: -
touch /mnt/.mb-restart
killall matchbox-panel
I was going to wrap xrandr to do this but Im sure there is a better way since the panel takes a while to restart.
Does anyone have any suggestions?