Canon does not reveal how they do that.
http://www.hv20.com/showthread.php?7494-Temporary-hot-pixels is still worth reading as you may fix it in post (which I did read you didn't want to.)
Time to call it in and hope they'll replace it.
Bob
i have a canon hv40 HD camcorder and i noticed a small red dot in all of my footage. i did some research and found that its called a stuck pixel. now im not talking about a dead or hot pixel. those are black or white. i have a stuck pixel. these are red green or blue. people often confuse dead/hot/stuck pixels. i was just wondering is there a way to fix this my self? (not in post) i heard about this firmware that canon uses to fix this.

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