hooookup, I think you just got a dud camera, not every 1D mark II is like that. It does happen. I personally think Canon's QA is slipping, but then, so is most manufacturer's QA levels if you ask me. An example of this is you never hear of back focusing or front focusing problems with the old EOS film SLRs.
Quality is a thing of the past these days, the modern mentality is "throw it away and buy a new one". Sadly, this is permeating through into more expensive items as well. I personally think that a 1 year warranty on a camera is simply far too short. Should be a minimum 2 years, if not 3.
With all of that said, I really do think you were just unlucky.
The other issue is that it took 2 visits, and 2 months for Canon to rectify the problem. That is completely unacceptable for a pro camera, especially at the cost of it. Either Canon is getting a lot of cameras back for repairs (and thus swamping the repair technicians), or they're just tardy (and don't really care about their customers), or they simply do not hire enough people to allow for a timely repair process to happen. In this modern age of less people, less time, more work, the customer will only suffer. Sure, the shareholder will be richer, but in the end, as a customer, I don't give a rats you know what about the shareholders. And I think is what's causing Canon's bad turn around times for repairs. Nikon doesn't seem to have this problem. Of course, the big thing is, why wasn't it fixed the first time/vist?
Dave