We said it before, now here is more proof. The length of time it takes your pages to load is a factor in Google's algorithm. Google Webmaster Tools added a "Site Performance" section to their program.
Within the new section you will find stats on how fast your Web site loads compared to other Web sites, example pages and their load times, and speed suggestions for pages on your site. You also have the option to install the Page Speed browser add-on which evaluates the performance of your pages and provides suggestions on how to improve them.
Below are screen shots from the new Site Performance section of Google Webmaster Tools for E-Power's Web site.