2o7.net and omtrdc.net are owned by Adobe, and parts of it's online marketing suite.
Not a virus, just some tracking/behavioural cookies.
Here's an opt-out link:
http://www.d1.sc.omtrdc.net/optout.html?omniture=1&popup=1&locale=en_US&second=1&second_has_cookie=0
It will place a special controll cookie on your computer that you MUST keep.
If you use more than one browser, you need to use that link with every browsers.
If you use more that one computer, you must do it for each ones.
Electro, April 2011