ncruses and menu

I have compiled and run the following, exactly as suggested in the ncurses library manual (Menus Library)

Code:

---

include <curses.h>
#include <menu.h>

#define ARRAY_SIZE(a) (sizeof(a) / sizeof(a[0]))
#define CTRLD        4

char *choices[] = {
                        "Choice 1",
                        "Choice 2",
                        "Choice 3",
                        "Choice 4",
                        "Exit",
                  };

int main()
{        ITEM **my_items;
        int c;                               
        MENU *my_menu;
        int n_choices, i;
        ITEM *cur_item;
       
       
        initscr();
        cbreak();
        noecho();
        keypad(stdscr, TRUE);
       
        n_choices = ARRAY_SIZE(choices);
        my_items = (ITEM **)calloc(n_choices + 1, sizeof(ITEM *));

        for(i = 0; i < n_choices; ++i)
                my_items[i] = new_item(choices[i], choices[i]);
        my_items[n_choices] = (ITEM *)NULL;

        my_menu = new_menu((ITEM **)my_items);
        mvprintw(LINES - 2, 0, "F1 to Exit");
        post_menu(my_menu);
        refresh();

        while((c = getch()) != KEY_F(1))
        {  switch(c)
            {        case KEY_DOWN:
                        menu_driver(my_menu, REQ_DOWN_ITEM);
                                break;
                        case KEY_UP:
                                menu_driver(my_menu, REQ_UP_ITEM);
                                break;
                }
        }       

        free_item(my_items[0]);
        free_item(my_items[1]);
        free_menu(my_menu);
        endwin();
}

---

What I get is the following:

Attachment 16503

As you can see, only the last item appears. However, when I start hitting the down arrow to activate REQ_DOWN_ITEM, the menu "unrolls" until I hit the bottom, when I get the full menu:

Attachment 16504

This is a MWE; I have a much longer menu which does the same thing. The infuriating thing is that this worked---that is, I got the full menu displayed as soon as it was posted---for months, and I can't find that I changed anything in the menu code to make this happen.

Does anyone have any ideas?

Well, I reinstalled ncurses and all seems right with the world again. But does anyone have any notion what was going on?