You had corrupt image… or at least a few images you site did not like for some reason. Perhaps your web host changes something. It only seemed to be a few; Mark A., Jeff A. and Deborah A.
all I did was download their images via FTP and did a save as, overwriting the downloaded image and uploaded and then they were fine.
I found these three by editing their entry in the admin, their entry would not load so it could be edited.
I initially narrowed the cause to the images by suppressing their display. It just happen to be the first thing I happened to try.
So, you might want to take a few minutes and check the remaining entries. Just because the first page of 10 loads unfortunately does not mean the remaining pages will.
Hope that helps!