I know of, and have had a direct hand in about 1/3, about 2000-ish NRX08's being sold last year through 10 different outlets.
1 furniture store, 2 Best Buys(before Onkyo severed the tie), 5 independent installers(who do Directv/Dish Network) and Amazon/Newegg.
I sent an email to each one of them(showing customer orders for each) and asked them if they have had issues with these units and what their individual responses were going to be. I CC'd the info for the furniture store and Directv/Dish Net installers(they know each other and buy stuff through each other, yet all five are independent Onkyo authorized dealers).
The furniture store had already begun sending emails out to their customers(that they had contact info with) and offered between 50-75% credit for the new Onkyo model. They like satisfied customers. They are also offering to have the X08 repaired, with them as the middle man, and return it back to the customer after THEY have had it after the repair to see if it does it again, then the customer can have it back. The customers that don't want them back, they are sending back to Onkyo so they can do with them as they please.
Three of the installers asked the furniture store to handle theirs.
The two that didn't are handling theirs on their own.
When you have 4 sales outlets responsible for well over 1000 of them, it adds weight to Onkyo's response. Onkyo basically asked the store to collect defectives for a month, send them in on a pallet once a month, depending on the number. For June, they sent in a total of 12...bringing the total to 35 they've sent to be repaired.
Best Buy, Amazon and Newegg(I emailed as "high up the food chain" at each, that I know...bypassing the "talking head" CSR). I got pretty much the same response from each. "Talk to Onkyo".
Out of the 2000-ish that I know of, this issue has affected less than 100...so far. Still 100 out of 2000 "still in warranty" receivers is a big problem, but in no way is it affecting all of them. The furniture store is collecting data on theirs to see if they can find a manufacturing time window for the defectives. Lastly, this furniture store has a policy of, "If your purchase is under warranty, or you purchase an extended service plan, call us first."
I could become part of this myself, in that I purchased the DHC 80.2. Anybody know if either DHC's are affected? Where I got mine, they have sold a total of 111 DHC all year. Two had to be repaired, neither one was "this" issue.