I just installed a new installation of WP as part of converting my site and I am having the bizarre issue in which no images display at all.
The strange thing is that I did a test installation on the .net version of my domain so that I could play around with 3.7.1 and all of the images worked fine there. Same version of WP, some hosting firm, same images, same plugins, etc.
I have checked the security settings of the upload folder and folders are 0755 while files are 0644.
I turned off hot-link protection on the domain to be sure that wasn't it.
I tried both the mass-uploader and the single-file at a time uploader, with the same results.
Here is an example page where there should be an image at the top: http://www.bawiki.com/wiki/concepts/stakeholders/stakeholder-identification/
Does anyone have any suggestions?