The home page thumbnails originally showed up compacted lines in IE 8 and in just one column with the other IE versions. I corrected this problem by setting the image size to auto, which fixed the home page thumbnails, but then made all the images in posts WordPress default sizes.
Others have fixed this same problem with NextGEN Gallery in Genesis with this code:
.entry-content .ngg-gallery-thumbnail img {
height:auto;
margin: 0 0 18px 0;
max-width:auto;
}
I was wondering if there is a similar fix for Agile.