Hey there! I’m involved with the site as well.
Just for clarification we run two WordPress sites on the same server, and for some reason it’s the smaller, lower traffic site that is having the problem. However I’m not ruling out something being up with the server.
Also it should be noted that when the bug occurs in Firefox, the page displayed is the RSS page, but when it happens in Chrome it is some sort of unformatted XML page.
Any help would be appreciated!