Annoying add refresh

[Yog-Sothoth]

About every 30 seconds my browser do a "Sending request to www.4advertising.net" and updates some add. Every time it happen I loose focus of the current web page and while writing a post this is incredible annoying. BTW, I'm using Opera. Tested it in Mozilla too and I don't loose focus there, but I get a hour glass and must wait until the add is loaded before continuing writing. This has not happened before today.

Anyone else experienced this?

[History049]

wasn't there another thread on this?