PCON.JS

Just today I  am suddenly getting asked if I want to allow a download of PCON.JS from www.wpt101.com.  this is happening from within IE9 under W7.  I cancel it only to have it come back again and again.  I have seen similar questions posted on other forum boards about this same file, and just today.

 

Any suggestions as to what I should do or why Norton didnt catch it?