You may have just noticed a quick downtime. I just upgraded the DB servers OS to FreeBSD 7.1-STABLE from 7.1-PRERELEASE. I'm also about to recompile the DB server software itself (MySQL). This should, I hope, improve stability.
When I was at school I also notice that the site was slow too today. The slow part is at the beginning like when it finding the page and then it loads.
It actually seems more zippy today from Chicago... If it is slow at the beginning, your DNS may be acting up... Not your IP...