I'm having similar image issues that many have reported. I can upload and insert images fine in my default site. When in a sub-site however, you can upload the image successfully, but can not see it in the uploader/gallery/edit page interface.
My site currently isn't accessible outside of our network so I can't give out links for you to see but what I've found out is that the default url for the image:
does not work while
does. My .htaccess appears to be correct, I've tried disabling plugins, but nothing has worked thus far. Any help would be amazing. Thank you.