I had a problem when first updating to yosemite that safari loaded the mobile sites. A quick found the fix to that was to clear out the website data from the privacy setting for the problem sites, and that worked for about a week. Now a few of them have gone back to loading the mobile site. What would cause this to go back to the mobile site? I've never seen this on any OS or browser that wants to load the mobile site over the full page. I would guess that safari is in some way saying to the server that it is not a full browser or IOS browser? Or could the new safari 8 not be recognised by all web servers?