Reading the blog: http://www.blog.concept-i.dk/adwords-landingssider/ (in Danish), it stated that loading time will now start to affect your quality score for adwords.
Interesting.
I dug a little further and found information about it availble in the FAQ from Google, at amongst other this link: https://adwords.google.com/support/?fulldump=1#87144.
Now this is rather interesting in my book, because eventhough we as consumers have gotten faster and faster connections over the last couple of years, pages which feature a lot of flash for example are still excrutiating slow and annoying to load. This will now start becomming a larger factor.
Focus on time-to-load is in my (humble or not) opinion a good thing, and I'd very much like to see a larger focus on this - and if Google takes this step further and starts deducting the pages rank on the search result with load in mind as well, it becomes more fun.