Norton Ad Blocking and AJAX
Management summary of this article: turn off Norton Ad Blocking as installed by Norton Personal Firewall. It sucks. If you are interested in details or you develop AJAX sites for the broad market, read on. Some users were not able to navigate to page two, three, etc. on the result lists of local.ch. As that functionality is implemented with AJAX I first suspected a general XMLHTTPRequest problem. But funnily enough people were still able to submit feedback - which is also submitted to our server with an AJAX call. After seeing some of the raised JavaScript exceptions by our users I noticed that there was a function called SymOnLoad in the output. As we don’t have any function by that name I started investigating and found a connection to the Norton Personal Firewall. ...