The 'right-click' panel menu doesn't seem very well layed out. It is _far_ too
easy for users' (read: me) to accidentally click 'Delete this panel' when they
meant to modify the properties of the panel or add an item to the panel.
For one, a confirmation dialog might be useful here. But we do then get into the
situation of users' actually selecting the delete option and then being
presented with a series of confirmation dialogs. 
Not sure what the better option is; to leave it as it is (as a 'corner
case'/pebkac); to reorganise the menu so accidental selections aren't so easy;
or to start presenting users' with confirmation dialogs for every action.


Other information:
Of course, this is a problem with me. But I do end up putting a lot of effort
into making sure my mouse doesn't move when clicking on to select 'add to
panel'; but I don't think I should be concentrating that hard for such a simple
operation.