I've had my Algonquins for about 6 months and just took the front covers off while checking polarity (see other thead) and noticed that many (but not all) of the little hex nuts that hold in the drivers are already rusting. Is this "normal" and what else may be rusting?

Thanks
Nathan

HT:M80,VP150,QS8,EP500 Outside:4xM3 Office:AudioBytes, Rumpus: M60,VP150,M22 Portable:2 x Airs