The gnome icon theme is missing icons for the "Cloudy" condition.
Check if you have the full gnome icon theme installed. What is the output of this command?
dpkg -s gnome-icon-theme-full | grep Status
Merely installing that package won't solve it, however. What do you get when you run the following commands in a terminal?
ls /usr/share/icons/gnome/22x22/status/weather-* | grep -v 0
ls -l /usr/share/icons/gnome/22x22/status/weather-* | grep \>
The gnome icon theme is missing icons for the "Cloudy" condition.
Check if you have the full gnome icon theme installed. What is the output of this command?
dpkg -s gnome-icon- theme-full | grep Status
Merely installing that package won't solve it, however. What do you get when you run the following commands in a terminal?
ls /usr/share/ icons/gnome/ 22x22/status/ weather- * | grep -v 0
ls -l /usr/share/ icons/gnome/ 22x22/status/ weather- * | grep \>