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1) Create Web Application 2) Create index.html with contents: <!-- To change this template, choose Tools | Templates and open the template in the editor. --> <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html> <head> <title></title> <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> </head> <script type="text/javascript"> debugger; //document.writeln("hello there"); </script> <body> TODO write content </body> </html> 3) Deploy this client-side page. 4) NetBeans & Firefox freezes. The key is the "debugger" keyword. If you remove it and put something else there it will not freeze. Make P3 since it seems to be such a specific case.
*** This issue has been marked as a duplicate of 137375 ***