Something is definitely up. I split a 10 gallon batch between US05 and WY1450 in a session rye pale ale and the US05 definitely has a tang that I've never tasted before. I don't get infections. EVER. I'd be shocked if that was the case. There was never any evidence of infection, the fermentation was normal and I kept both beers under identical conditions. I thought maybe it was just my perception but my friend agreed it tastes twangy. I wish I'd saved the pack to identity the lot. It is dry, as expected, but has a tang that the WY1450 does not.