From what the Canon service center told them, I think we can go farther than that. We can say with good confidence that if you get salt water into the 5D2 shutter release, you'll get corrosion.
That may be just as true of any other camera, but we don't have any positive examples of other cameras getting salt water on their shutter releases.
I'm of two minds on this, actually.
On one hand, it seems to be a believable that salt water in the shutter release will cause corrosion.
On the other, though -- I cannot help but look at the entire episode with a skeptical eye. Reading the gentleman's posts regarding his experience, I see flashes of anger, frustration, and disappointment -- all understandable given his circumstances, but telling with regards to his reliability as a resource. (Does he really think exposure to blue sky would cause the shutter on a new 5D2 to fail?)
With 15 years of experience in CE manufacturing and sales, I have learned that when people are upset, its hard to sort the fact from the hyperbole. And hyperbole never solved a single problem -- it just gets in the way.
So, call ME cynical, but I would personally want to see his Canon paperwork prior to allowing that the salt water caused the corrosion, or that even corrosion exists.
I've shot in "worse" weather than the LL trip, NO ISSUES.

