To my knowledge, all of the FTF issues the factory is aware of have been discussed on this board.
Utlimately, only one went "unresolved" that I know of -- and the exact nature of the failures is the subject of some debate.
The problem with Internet discussion forums is that problems get blown way out of proportion. There will be one thread about one gun and people assume the worst. People don't log on every day to report they are happy with their gun -- but they sure log on to complaint about them. You know the drill -- Glock .40s blow up, Kahrs have magazine disconnect failures, Kimbers have MIM part failures, Kel-Tecs are kit guns that need gunsmithing to function properly, etc.
The R-9 is one of the highest, if not the highest, quality production gun available, supported by exemplary customer service. I suppose that individual guns may have a problem on occassion -- but its rare. Each gun that leave the factory is test fired by either Eric or Karl.
I responded to the thread in question too -- as you will see. The best way to avoid problems is to use the recommended ammo -- which is top quality stuff.