It seems this issue might be internal ... enough light manages to get through the innards of the camera to affect the metering. Were it a "lens cap" issue it would just be the nature of the beast. As mentioned it only happens with the top LCD backlight is enabled when metering, you are using high ISO settings, and shooting in a very dark environment. We haven't been able to keep a body in stock long enough to even open one to test it out to see how serious it is and no one who has purchased one has called with issues or concerns about the problem.
It's a fairly easily avoidable circumstance ... especially since you can see everything on the back LCD so you don't even need to turn the backlight on to see the top LCD. (I rarely look at the top LCD when shooting a Canon). Not making an excuse, it still needs remedied.
Canon Canada and Canon UK have both suspended shipments, I haven't seen an announcement of Canon USA (although shipments are pretty dried up already). I suspect their fear is this will require a physical fix to the camera, challenging for a distributor to handle recalls and the like. It also could be they have no cameras to ship anyway which is how things are all over, so a little diversion. It seems Sony, Nikon and Canon seem to be having the same issue ... none of them seem to be able to ramp up production to come close to meeting the pent-up demands of their user base. Whether this is remaining issues from the tsunami and Thailand flooding or some other issue, many users are very frustrated right now.
