In month view, the first and last columns (Sat & Sun) are shown in grey. This is standard way to differentiate weekends from weekdays. The problem is when you change your preferences for First Day Of Week to Monday for example, the shading does not change. So rather then showing the two right-most columns (Sat & Sun) grayed, it keeps the first (Monday) and last (Sunday) grayed. :frown:

Oops.