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I think the feature is still there, it just gets sluggish if the network or the server is sluggish. Sometimes it gets so sluggish it seems nonexistent.
The feature should still be there, as Harald said.
Can you tell me a bit more about the circumstances of your error message? Did you check the "notify me of answers" box? Did you use the email currently in your profile? In other words, can you provide another data point for this bug?
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