Every blue moon or so the Deskbar will crash. An easy solution to this potentially bothersome situation is to create a symlink to the Deskbar on your Desktop and place it behind where the Deskbar normally resides on your system (You’ll find the Deskbar in /boot/beos/system/). Then, if it crashes, its merely a matter of clicking an icon to resume your normal computing (assuming Tracker is still running ;-).
To launch the Deskbar manually, just type:

/system/Deskbar &

into a Terminal window.