usb keyboard and "keypad equals"

[Frank Murphy <murphyf+deb-ppc@f-m.fm>]

Is anyone here able to use the equals key on the keypad in X? For me, it moves 
the cursor back one space, like the left arrow.

Looking at xev, it seems that the keycodes for these two keys are the same:

KeyPress event, serial 22, synthetic NO, window 0x1e00001,
    root 0x48, subw 0x0, time 109868, (92,68), root:(664,486),
    state 0x0, keycode 100 (keysym 0xff51, Left), same_screen YES,
    XLookupString gives 0 characters:  ""

KeyRelease event, serial 27, synthetic NO, window 0x1e00001,
    root 0x48, subw 0x0, time 109931, (92,68), root:(664,486),
    state 0x0, keycode 100 (keysym 0xff51, Left), same_screen YES,
    XLookupString gives 0 characters:  ""

KeyPress event, serial 27, synthetic NO, window 0x1e00001,
    root 0x48, subw 0x0, time 112566, (92,68), root:(664,486),
    state 0x0, keycode 100 (keysym 0xff51, Left), same_screen YES,
    XLookupString gives 0 characters:  ""

In the console, the = can be typed. Any ideas as to where this is breaking 
down?

Thanks for any tips,

Frank