Missing Photos

My photos have gone AWOL.
It was drawn to my attention last night that many of the photos on the Scottish Routes section of SeaKayakRoutes.com are missing.
I looked under the computer. They're not there. Infact, they are still on my computer, on the iWeb program which ought to mirror exactly what's on the website. But it doesn't.
.Mac suggested a version of "switch it off and back on again", which involves me attempting to re-publish all the images. That is going to have to wait until the weekend.
Computers. Eh!