I'm wondering if I've stumbled on a bug here. I noticed recently that I'd achieved the silver badge on "concurrency" on SO. Yay to me.
There are 3 other guys that have done so -- of course Jon is one. So then I wondered who else is close to their silver for this category and so I go to the top-users page:
I was surprise to see Don Stewart above me at 450 points and yet has not gotten the silver badge for concurrency as far as I can tell. It's not on his user page or in the concurrency badge page.
Is this a bug or am I not understanding how the badge is calculated?
As always, thanks for SO. Always a great resource.