From google:

" As part of our continuing efforts to improve the user experience, we will soon incorporate an additional factor into Quality Score: landing page load time. Load time is the amount of time it takes for a user to see the landing page after clicking an ad.

Why are we doing this?

Two reasons: first, users have the best experience when they don’t have to wait a long time for landing pages to load. Interstitial pages, multiple redirects, excessively slow servers, and other things that can increase load times only keep users from getting what they want: information about your business. Second, users are more likely to abandon landing pages that load slowly, which can hurt your conversion rate.

When are we making this change?

In the next few weeks, we will add load time evaluations to the Keyword Analysis page (we’ll notify you when they are available). You will then have one month to review your site and make necessary adjustments.

After the one month review period, this load time factor will be incorporated into your keywords’ Quality Scores. Keywords with landing pages that load very slowly may get lower Quality Scores (and thus higher minimum bids). Conversely, keywords with landing pages that load very quickly may get higher Quality Scores and lower minimum bids. "

This is motivating me to go to paid hosting for my landing pages. I am using 110mb.com right now. They are free and reliable, but a bit slower than a normal site.

I think this has been out for a week or two now, Google sure is slow in releasing info to everyone

My pages are loading slow. I'm gonna use the load time script. What's a good ballpark range for a page to load? Is it 1 to 2 seconds?

Generally anything over 1 second is pretty long.

This is a quick way to test load time

www.Tools.Pingdom.com