I came across a couple articles about more recent violence in Colombia, mostly to the north of Bogota in San Carlos:
http://news.bbc.co.uk/1/hi/world/americas/2673309.stm
and further north, a mountain highway ambush in Bolivar province:
http://www.swissinfo.org/sen/Swissinfo.html?siteSect=143&sid=1578199
Even if not venturing out of the main cities, one needs to be very careful as noted in the previous post about the violence at BOG international. I was surprised to find out while talking with an amiga earlier today (living in Bogota) that she did not hear about the attack that killed four people there. Keep a heads up gentlemen when going south.