I am having trouble with my full size images not loading. When you click on the intermediate image a new window pops up with but it is blank. (Well, there is the file name that is the link to close the window.) The only album in my gallery that has large images is http://www.mikebaileyphotography.com/thumbnails.php?album=9.
Check file permissions on the full size images. Looks like they are not readable to Apache.
You are a genius! That was the problem. The permissions were set at 700 instead of 644.
Thank you!