如果从localhost失败，则IE JSON解析可以正常工作

I'm attempting to track down a javascript exception I'm getting when parsing some JSON in IE that has been returned by an AJAX request. Normally I'd assume a JSON formatting error somewhere in my code but in this case the JSON parses fine in Chrome, FireFox & IE but in IE's case ONLY if the URL is localhost. If I change the URL to my-laptop instead, which points to exactly the same location, the JSON fails to parse in IE but is still ok in Chrome and FireFox.I'm attempting to track down a javascript excep