Weird Messages On Websites... Am I Infected?

Hi All,

 

I have recently come across a few websites that will not allow me access.  They say that my computer or another computer on my network is infected with a botnet virus.  The full scans I have done with Norton NIS 2012 Version 19.2.0.10 come up clean.  

 

Here is one page where I am getting this access denied message:

 

http://youtubedownloader.com/xx/installed?v=3.5.123

 

And here is another:

 

http://www.rozsavage.com/

 

Is the issue my ISP or is it my PC?  I looked at my gateway's reports and I don't see any outgoing activity from my gateway's firewall that would indicate my computer is sending out data (or spam), so I am completely puzzled.

 

Can any of you shed some light on this?  Any assistance you all can provide on this would be greatly appreciated, thanks!

 

Sincerely,

 

Cricket