Earlier quoted context omitted.
This is by far the worst problem with Stack Overflow. The mods seem to leap at the chance to mark questions that are similar, but not identical, as duplicates.
There's one easy fix for this, and several other problems with SO: Don't close duplicate questions. Just cross-reference them. Reasons: - Gets rid of the "This was closed because of trigger-happy moderators failing to distinguish between 'similar' and 'identical'" problem by making that situation impossible. - Improves answer discovery for users: If Google gets you to almost, but not quite, the right question, cross-…
(Yes, I think SO looks like a bug tracker used as a discussion forum. They're certainly very close, including hostile project owners, WONTFIX's, etc.)