Looking on www it says
https://googleadservices.com is a nasty virus.
In deleting all my cookies I got locked out from all my sites.
This is really mega annoying.
I wasted a whole morning trying to block this from my computer...with no success.
This is seriously scary for me.
Quote from www....
"Googleadservices.com is it safe? does it give viruses or cause mutilation to the system?:
YES! It causes fatal damages by placing its corrupt files which can changes DNS setup and weaken browser security"