As I have followed this thread, it has caused me to wonder something. Not to diminish in the least the problems that are occuring and the fact that this is a commercially available product with generally released micro code causing this problem; we all know that s*&t can happen and almost always does with software, especially considering all the possible permutations and combinations of settings and usage patterns.
So, what I was wondering, this being a forum focused on enthusiasts; to what extent is it like (as my wife once put after we were the subject of a pick pocket experience) hanging around the police station and getting the impression crime is rampant? Is the community of users here more likely to be using the advanced features of the the switch, using capabilities that average joe user might not need nor use, and thus more likely to experience the issue.
The trade press is often keen to jump on manufacturers who have really buggy products and help spread the word. Have not really seen any mention of this outside of this forum.
Just wondering? BTW, I have not even tried 4561 based on the reports - have stuck with 583 for now, and quite stable.