Hola, luego de un test en http://www.pcflank.com/browser_test3.htm, obtengo el siguiente resultado:

"Your computer may save special cookies on your hard drive that have the purpose of directing advertising or finding out your habits while web surfing.
Recommendation
We advise you to get personal firewall and/or anti-spyware software. We recommend AdAware Plus.
If you already have a firewall or anti-spyware program adjust it to block cookies. You can also block cookies using your browser if it supports cookies blocking feature"

Uso Avast, Comodo firewall, AVG Antispyware y IE. ¿Hay algo para hacer?

Gracias.