Right arrow key quits working in X after a while

[Nick Lidakis <nlidakis@verizon.net>]

I seem to be having an issue with my right arrow key in X. It's quits working
after a while. It works fine in a VT, though.

Using xev | grep keycode, I get:

state 0x0, keycode 111 (keysym 0xff52, Up), same_screen YES,
    state 0x0, keycode 111 (keysym 0xff52, Up), same_screen YES,
    state 0x0, keycode 113 (keysym 0xff51, Left), same_screen YES,
    state 0x0, keycode 113 (keysym 0xff51, Left), same_screen YES,
    state 0x0, keycode 116 (keysym 0xff54, Down), same_screen YES,
    state 0x0, keycode 116 (keysym 0xff54, Down), same_screen YES,

but nothing for the right arrow. Now, running vim in an xfce term, the solid
cursor just blinks when I hit the key.

I do use s2ram for this desktop and rarely shut it down. Any clues? Keyboard
is a Happy Hacking Lite PS/2.