Slackware Linux - Error compiling keymap

I had some issues today with the Akonadi server failing on my Slackware 14.1 box at the office, so I resorted to killing X for a quick revival. However, issuing startx only resulted in the following errors:

(EE) Error compiling keymap (server-0)
(EE) XKB: Couldn't compile keymap
(EE) XKB: Failed to load keymap. Loading default keymap instead.
(EE) Error compiling keymap (server-0)
(EE) XKB: Couldn't compile keymap
XKB: Failed to compile keymap
Keyboard initialization failed. This could be a missing or incorrect setup of xkeyboard-config.
(EE) Fatal server error:
(EE) Failed to activate core devices.(EE)

I did recall that the last thing I did before leaving yesterday was to fire up a rather large build queue. With that in mind I eagerly started going through the list to see if I had built something that would mess with the X Keyboard Extension (XKB).

Fast forward twenty minutes and I eventually comprehended that my build queue had consumed 100% of available space under /
For some reason I had again managed to ignore the obvious. After cleansing 25GB from /tmp, I could at last initialize an X session and get on with my day.

However, if disk space is not an issue, I would recommend checking permissions on /tmp before doing anything else.

Now please excuse me while I try to get PulseAudio working on my Slackware Current box. Say what now? Say Slackware 14.2 beta 1