It is now 2015 Spring ! wow anyway the post by torqued explained the whole issue your belt should have a 1/4" deflection at the widest point if that one bolt as mention on that post by Torqued stated is to tight it won't allow the alternator to line it's self up with the other pulleys think in those terms rather than putting on due load on all your other bearing and bushing by having the belt to tight.
Regards, Paul