How quickly does Google News autocomplete react?
I pointed out the other day that the top Google News autocomplete suggestion for Cheryl Cole was Cheryl Cole fart - just two days after she broke wind on the X Factor. I've been trying to find the speed at which Google News can react to a surge in new searches. Update "Leslie Nielsen dead" added.
Leslie Nielsen dead
It took a mere 10 hours (and probably less - that was as soon as I could check) for Google News to have Leslie Nielsen dead as an autocomplete suggestion after the first report of his death.
Gillian Mckeith pregnant
Well, she's proving a rich source of data ... As you can see, the first news story about Gillian McKeith claiming she was pregnant was 20 hours ago:

Sun reports that Gillian McKeith is pregnant
But Google News autocomplete is already suggesting it:

Google suggests she's pregnant
People might have started searching before the news story - but there's no sign on Twitter from before 8am today of any mention of her being up the duff. So it seems Google can react inside 20 hours.
Gilian McKeith fainting
Gillian McKeith fainted live on I'm a Celeb last night at about 9.45pm.
At that time, although she had fainted already earlier in the week, Google News wasn't suggesting "Gillian McKetih faint" as a suggestion.
Fast forward to now - 7.45am on monday morning - and it is. So that took just 9 hours - although this may be influenced by people searching earlier in the week when she first fainted.

Google News autocomplete: Gillian Mckeith faint
New Zealand mine
The New Zealand mine explosion happened at 3.45pm local time on Friday 19th November, according to this report. That's 2.45 am in London (on the same date - New Zealand is 13 hours ahead).
At 10.45 am on Saturday November 20th, as I type this, Google News is showing "New Zealand mine" as the top suggestion - so that's inside 32 hours:

New zealand mine - autocomplete in google
Obviously it will have taken time from the explosion happening to it being reported and people searching for it so that's pretty quick. I'll carry on looking for examples ...