While it is very unfortunate that you all have had problems with your S100s I was trying to point out that it is not a universal occurance. There are many thousands of these cameras out there whose owners are completely happy with them.
I find it interesting that on the Canon Digital Photography Forums, which has a membership 100 times the number of this one, no one has ever voiced a complaint about the shutter not working properly on the S100. My S100 works flawlessly.:-)