HTTP Phoenix Toolkit Download Request Blocked

I have been dealing with a family member's Tidserv rootkit issue, so I may be paranoid unnecessarily. But I just had this pop up from my NIS 2010 on my own netbook, and just want to make sure it is nothing serious. It just happened when I was browsing on Firefox.

 

EDIT: I looked around for info and the only thing I could find was that this name was included in a recent NIS update:

http://securityresponse.symantec.com/en/au/business/security_response/securityupdates/detail.jsp?fid=nis&pvid=nis2009&year=2010&suid=cNDC_Consumer_09-SU243-20100809.001

 

My computer is running perfectly well. Except for this one high alert,  there's nothing else in my Norton History that seems to be a problem. Thank you for the help with this!

 

Image below:

 

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