We had some wars with MG already, even though the leaders are really good friends of me.
The first wars were pretty short and were caused by jelousy about a woman - I was with Devin but she left me for Kaldra - who was leader of MetalGear back then.
The last war with MG was because their leader Mike DeCarlo asked me to have a war just for fun to have some action until NWN2 releases.
But when we started attacking MG Members at their server drama broke out in MG so the war lastet only 2 days because everyone left MG including the leader MG Mike who was one of the first who left.