If you read the reviews of the MagSafe power adapters on the Apple Store, many people are talking about their connectors fraying, melting, and otherwise developing dangerous damage. Quite a few of those posting reviews seem to want a recall.
I carry one of these around, so it’s worrisome.
I wonder how prevalent this problem really is. The power adapters are one of the lowest-rated items I come across in the store and they are heavily reviewed. Out of 471 reviews for the 85W model, the average is two out of five stars.