In the right pane, the buttons: Contact, Calendar, Settings, ... etc. lay horizontally by default and take up too much of valuable real estate from my screen. I've seen them lay vertically some times but I don't seem to have control over that. They should lay vertically by default and be easily reset to vertical positioning.

Some statistical information is displayed in the right pane under the buttons but it is not of much value to me. I rather have the space for my emails.