I have checked the configuration. the binding is correct and no duplication. The following is the screen
site 1588487336:
http://img30.imageshack.us/img30/1263/site2js.jpg
http://img264.imageshack.us/img264/7763/site2conf.jpg
site 1:
http://img39.imageshack.us/img39/6889/site1r.jpg
http://img248.imageshack.us/img248/6843/site1conf.jpg
Anyway, both two websites use different certificates