Huh ??
AMD's problem was huge compared to this nitpickin an errata list.AMD's problem was that K10 failed validation at major OEMs , that's HP,IBM,Fujitsu,etc.When that happens you're royally screwed.Those major OEMs didn't want to touch K10 with a 10 ft pole.
When you ship servers in mission critical areas ( industry, banking,etc ), a once in a while system crash ( which wasn't so rare in virtualized environments it seems, which btw is the current hottest trend ) is simply not acceptable.
Chips can have hundreds of errata , as long as they pass the most stringent validation requirements you're fine.
The difference is that with K10 people in the industry started whispering and gossip sites picked it up ; in this case a dude searched an errata list ( guess what genius, that's published after validation => wasn't considered a game stopper ) and sent a link a FUD.
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