I was a bit sloppy with my arctic butterfly and managed to drag a bit of oil across the sensor glass.
Nikon D3 bodies are not immune to the same fate. My brother in law shoots Nikon and had the same thing happen to him and his D3. Do Nikon users get up in arms about it?
D3 thread -
http://forums.dpreview.com/forums/readflat.asp?forum=1021&message=31544228&changemode=1.
This all seems like a storm in a teacup to me. Many of these bodies are getting on now - a year or two old - and only now these spots of oil are a problem? Give me a break. If you haven't noticed them in two years there really isn't a systemic problem. My body was manufactured last September and I've had the camera almost five months. I don't stop down much but I do shoot BIF against clear skies and I can't say I've ever noticed a problem with my camera. In all honesty I don't know what posessed Canon to make all this fuss. It seems they've opened a can of worms needlessly.
The only reason I can see for ringing the alarm bell on this is if during the most recent round of AF checks/fixes some nutcase went around applying liberal amounts of oil in every service department across the USA. Is there an equivalent notice for Canon elsewhere in the world? I'm not aware of one.
As people have said, sensor cleaning is one of the joys of DSLR ownership.
Here's a sample image shot this morning with my 1D3 at
f/32 with no edits. If you try hard enough you can spot the odd blob against this plain background but they aren't exactly showstoppers and who shoots at
f/32 with a crop body anyway?
Here's the same image with exposure pumped up by 2 stops in Lightroom and the blacks darkened substantially, to emphasise the sensor spots.
Now the spots are clearer but this is so far removed from a "real world" shot as to be ridiculous. Nonetheless the spots are there. Inspecting the image at 100% they pretty much all look like dust to me, certainly not the oily donut things that the notice mentions. Even if a few of them were oil, if the spots bothered me then the sensor needs a clean regardless, oil or no oil. Like I say, it appears to be a rather foolish storm in a teacup.
p.s. I have never wet cleaned this camera or even used a Rocket blower on it. I have relied solely on the dust shake thingy to keep it clean. Whether Canon cleaned it when it went back for AF checks I do not know, but that was around two months ago and I've shot over 1,000 images with the camera since then.
EDIT : I now see that Canon Europe has issued the notice as well -
http://cpn.canon-europe.com/content/news/EOS_oil_spots.do.