icedowl - 5:21 am on Apr 10, 2010 (gmt 0)
Any ideas what would cause these sudden spikes in slow load times? Anyone else see this?
Yes. In fact, in early February I was on vacation and could only get online with a dial-up connection. During this time mine spiked way up. Since they say "Data may also not be available for your site if not enough users (with Google Toolbar and the PageRank feature turned on) have visited your site's pages during the time period displayed.", I assume that at least part of the speed is based on information gathered by the Toolbar. Personally I do use the toolbar and was using it when on dial-up.