Good blog post that shows (statistically) that Africa has NOT gone coup-crazy. Aside from an interesting blog you should follow him on twitter:
Ultimately many of these coups stem from the inability of the civilian government to control the government. Fore more on this read this excellent report from the Africa Center for Strategic Studies: Africa’s Militaries: A Missing Link in Democratic Transitions
Another good article: Coup predictions: Africa doesn't look as volatile as you might think - CSMonitor.com http://www.csmonitor.com/World/Backchannels/2012/0416/Coup-predictions-Africa-doesn-t-look-as-volatile-as-you-might-think
What are the effects of cocaine trafficking on GB government?