[xmonad] Space between terminal

[Pablo Olmos de Aguilera Corradini]

Since some time (sadly I'm not sure when), I've started to see a
little space (like 5 to 10 pixels) between the vim window and the
terminal window[1].

I don't know where to start looking, can somebody point me where to
start looking?

[1]http://i.imgur.com/dG4Kd.png

Regards!
-- 
Pablo Olmos de Aguilera Corradini - @PaBLoX
http://www.glatelier.org/
http://about.me/pablox/
http://www.linkedin.com/in/pablooda/
Linux User: #456971 - http://counter.li.org/