I also like apple design, and think their power adapters are way nicer to pack and use than anyone else's. But they are also demonstrably unreliable. And its not people abusing them. If anything, apple users seem to be more ginger with their pretty, pretty machines.
Until recently (and for years) I worked at a Fortune 50 telecom. Our team had several dozen macs. Of course, we also had like 100 dells and toshibas. Never once saw a bad PC power adapter. Clunky, ugly, hot, etc. but never broken or frayed. The apples? Bad, approaching 100% if you give them time.
The wallstreet and bronze had an adapter recall for fraying and pulling. All of ours went bad and got replaced.
The saucers did seem to work.
The boxy ones starting with the Ti-books were prone to pulling out of the body, or just popping and dying. My favorite was on a weekend, on a trip overseas. It took 4 months to work out the expense report for buying a replacement from a local electronics store. After three died on me alone, in 6 months, I went to a MacAlly one instead. It worked till I left.
The MBPs we had were, when I left, at about a 50% failure rate, at 3 months average age. Popping and dying, or pulling or fraying. So not even one problem, but everything that can go wrong. Our admin was just buying extras so we could replace immediately, and desperately unhappy that no aftermarket ones were available due to the magsafe patent thing.
Hell, a Cube we had (for the VP) had a PS that just went to hell and had to be replaced.
As an example of how lame the design is, has anyone noticed the current cordwrap tabs are the same size as on the Ti- and Al-books, but the cord diameter is bigger? So now it doesn't really fit, and comes off in transport. Apple seems to put their C-team on this work, and its time to get someone competent.