This is a very important string. As a Certified Pistol Instructor I concur with those who applaud nase's behavior in his having pointed the R9 in a safe manner prior to his slamfire.
Further, Richard's comments about technical issues and never handling a firearm after alcohol consumption are first rate. (I once disqualified a federal officer from the firing range to which I was responsible because he had been drinking. Was he drunk? Certainly not, but alcohol and guns do not mix, period).
I have a Robar R9 and, like Yankee 2500, have never experienced this problem.