Although this little feud is getting old, I'm also looking forward to DHH's response. It will be interesting to see if his comment about Mongrel was simply an oversight or a cheap shot lie. I think it shows a total lack of class on the part of DHH to publicly speculate on a blog about Zed's mental well-being so I wouldn't be the least bit surprised if it was the latter.
"But still an inconvenience, naturally. Nobody likes a memory leak. So I was happy when a patch emerged that fixed it and we could stop doing that. I believe the fix appeared some time in 2006. So even when Zed published his implosion at the end of 2007, this was already ancient history."
I assumed the patch he referred to was for Rails, not Mongrel. And why would Zed make such a big deal about this in the first place if it were his own software's fault?
Memory leaks in Mongrel that were fixed in 2006 are the at the center of DHH's argument that RoR crashes are ancient history. Yet Zed shows that the application DHH is referring to that previously needed to be restarted 400 times a day wasn't even running on Mongrel.
It is easy and more fun to assume malice, but honest mistakes happen.
Edit: I agree 100% with jm4's elaboration down below.
Edit: please see http://news.ycombinator.com/item?id=365020