Nope. The servers are ticking over nicely and are showing no signs of being under any stress at all. Perhaps you're having local problems or an issue with the ads?
How slow is slow? Does the page finally appear or do you get some kind of timeout or other error? If the page does appear, does it have ads on it and is it always the same one on a page that was slow to load? And the usual question, what browser are you using, including version number?