One additional changes was made to GrabPERF today. The homepage with the Top and Bottom Performers, has been changed from a dynamic page to one that is autogenerated every two minutes. This graph should explain why.
The dynamic page was starting to push 20-25 seconds just for the Top 20 List. When I switched to the static list, times dropped to less than 1 second.
It's always bad when a Web performance measurement site has poor performance.