I have been getting this since yesterday
I thought it was Google having a snoop of my cashe again but apparently not
Had a look at the debugging window but all PC stuff .
What is is & can it be rectified ?
I've been getting a yellow banner the last couple days with a similar message too. I just wait a couple seconds for it to go away. Firefox browser. I guess this is common, may be tied to something running in the background from Adobe from what I've read.
Went back to the mac OS and got the same results
Tried to run terminal in the background and it does look like it is Google doing the evil working out what adds to display.
This is backed up by the fact I am now getting Aust only adds in the pop ups where as last week most of them were international adds.
Not as bad as it was but like you it still hangs quite a bit.
Now I just walk away and let it do it's merry thing and if it is stll stuck then do a force quit.
Thinking about emailing the advertisers and telling them that their Google add is making my computer freeze so I am going to boycott their products