Why am I getting this message?
Access Denied You don't have permission to access "http://www.stubhub.com/" on this server.
You sure your not blocking it with Addons?
It looks that the Stubhub website has a problem with "en-US" in the accept header and with some language combinations gives the "You don't have permission to access..." error. What works is adding a second "en-XX" language or other not English language or if you have "en" as second then add a third language (don't have to be "en-XX" as something like "fr" works).
See also this thread:
- /questions/1384569 One website not loadable with Firefox only (Chrome works fine)