Hi, I think I might be having this same problem. On my portfolio page, the layout of my image thumbnails gets thrown off for some reason. I had not changed anything in the CSS or functions or template page at the time (now I have). There should be 4 columns but sometimes, various rows only have 1 or 2 images while the next row will have all 4.
I installed the Genesis Grid plugin and that seemed to fix the problem. But, I don’t want my Blog page to be in a grid format, so I am not sure what to do. I can’t share the site publicly just yet as I am not finished with it and it is password protected. For the moment, I am simply trying to figure out how to turn off the genesis grid on just my blog/news page.
Thanks!