Something weird has happened recently. My calendar is gone. But not really.

I use Outlook 2007 SP1 on Vista. My mailbox is on an Exchange 2007 server.

If I click the Calendar shortcut on the navigation pane, nothing happens.

If I press CTRL-2, nothing happens

If I go to the "Go" menu and select "Calendar", nothing happens

If I go the folder list, there is no calendar folder. Nada.

HOWEVER...All of my appointments show up in the To Do bar, and if I
right-click on the calendar shortcut on the navigation pane and select "Open
in new window", my calendar opens. This is the only way that I can get into
my calendar.

What the heck is going on?