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About an hour or so ago, my stack overflow reputation dropped from well over 1000 to just 41. What's going on?
At the same time, my username got reset to one of those numeric ones (user123456 or similar), though I've changed that back to "tobyink" now.
My account is tobyink - you can see the history is fine, so it's not like I accidentally signed in with a different Open ID and ended up creating a new user with lower reputation.