Well, after Dave's posting I went through my CD collection and, (yikes!) I found six suspect Hyperion CDs. Two are unquestionably bronzed, one is questionable, and the remaining three are golden-colored, yet seemingly ok. All were on the list of possible defectives. My question: If the three ok CD's haven't bronzed yet, will they ever? (All have been sitting in close proximity to each other for @4-5 years.) Is the rate of corrosion even, or do some CDs take longer than others to corrode? John Smyth