Help! Why does computer turn to this error page lately?

Question

Lately, when I've tried to enter certain web sites, the page will start to load onto my computer, and then, usually right before it's completely loaded, go to an error page. The error page shows this: http://pagead2.googlesyndication.com/pagead/ads%3Fclient

What's going on? How do I fix it?

Thanks for your help.

Answer 1

try running spybot s&d

Answer 2

Bad link