Even if you are not running the same technology as someone else, you can gain insight into how they solve hairy problems by reading through their summaries of strange fixes.
Today there was a great post on debugging CSRF problems in Rails. I thought it was interesting and had run into something similar but not nearly as convoluted. It was useful to see the steps that the post author took to figure out what was the root cause of the problem, tracking back to what the change in the Rails code base was that caused him to have invalid assumptions.
What are some great debugging posts that you have read in the past? (Maybe even something on Reddit or Hacker News) Share them in the comments!