Doubleclick taking over?

About every 20 seconds I get a download from Doubleclick, freezes up everything and I lose my place when typing in a message or reply. Only on this site. Something new here? Sure is annoying anyway. Oops there it went. Don't see anything on the screen though so I wonder where the program is actually going? Oh well, progress I guess.

That should not happen anymore. Thanks for your feedback.