Hot pixel in my 20D, should I return it?

Yes, that is more than acceptable.
FYI, check out some of the camera review sites on the web.
Check out some of the long exposure and or high ISO sample pictures they post. You will always find one or more hot pixels.
If these cameras that are hand picked by the manufacturer for review have hot pixels, it's more than acceptable for the average consumer camera to have them too.

I think I will keep it, it worked AWESOME today with my Tamron 28-75 and Canon 70-200 F4.

Here is a shot of my friend that was with me today, shot with the 70-200 F4. And a landscape shot with the Tamron. I am pleased

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Damn, those are nice photos, and they look razor sharp.

Wow!
Those are awesome shots!

BTW, I would bet that if you exchanged the camera, you would get another one that would show atleast 1 hot pixel at long exposures. ANd that is if you are lucky. If not, you would probably get one that shows more than 1 hot pixel.
Again, as long as the hot pixel only shows up at exposures longer than about 1 second, that is normal.
BTW, the 20D has a custom function to enable "Long Exposure Noise Reduction." This is really mislabelled as it doesn't reduce the noise on long exposures (as the noise is already very low on the 20D). In fact, it actually reduces/eliminates hot pixels by taking another blank shot of equal length and subtracts the hot pixels from the image. It works on shots of 3 seconds and longer (I think).
You should enable this feature, and let us know if the hot pixel is still there
I have 1 hot pixel like yours on long exposures at ISO100. When I enable this feature, the hot pixel is gone! It also cuts down the number of hot pixels on really long exposures, or long exposures at high ISOs, down by 50%.

If you have a look at the 30sec exposure samples at Steve's Digicams, you can spot atleast 2 hot pixels in the regular picture. With noise reduction enabled, both hot pixels are gone

I have a hotpixel on my 10D. ISO 100 and 1600 at shutter speeds from 1/200 down to 30 seconds.

It seems to be triggered more by my holding the shutter half down for focus lock more than anything else.

And the kicker to this, Capture 1 hides the hot pixel. All the other converters show it. Some worse than others.

FYI Holding down the shutter halfway will not trigger a hotpixel.....

All I am saying is what I am seeing. If I don't hold the shutter down, no hot pixel. If I hold it down while I wait for "the" moment, I tend to get the hot pixel. I am fortunate in that it is only 1, I know where it is at and can fix it easily in my photos.

And with C1LE, it masks it completely. I have asked the people at Bibble to look at doing that because I think it is a neat feature, intentional or not.

Well ok, but knowing how hot pixels are caused in pretty good detail, I'm 99% sure that is not the reason. However, whatever works for you, works for you I guess.

Just for the hell of it, try seperating the Meter and AF buttons in C.Functions.

I'm not saying it makes sense. If it were a stuck pixel it would be present 100% of the time. A hot pixel also has characteristics that define it and this one pixel behaves like a hot pixel.

My theory, though I have not exposed it yet (about to though) is by keeping the system charged (focus lock) is somehow leaking in to the imaging sensor and causing the pixel to get hot.

Otherwise, what I am seeing is truly random behavior (possible). But it is only one and easily fixable. As has been noted, I could send the 10D in for repair and get it back in worse shape. Not sure I like them odds.

Thanks,

BTW warm temps will also increase the number of visible hot pixels.

Inside venues so temps are pretty consistent.

Thanks,

Hot Pixel

Toogy,

Your shots look great!

IF I were getting a red hopt pixel with normal shutter speeds.. I would return it..

You mention at least one image where the pixel showed up at 1/50th of a second... this to me would be unnacceptable.

Just my opinion.

I did a bunch more test shots, and it shows ups at 1/20th second at ISO 3200, and also at ISO100 at 1.6 second exposure.

Does this still sound acceptable?