I am see a lot of the following errors in my log:

page not found 08/13/2010 - 10:39 data=spell-scaling admin
page not found 08/13/2010 - 10:39 data=item-scaling admin

This appears to be a problem caused by a change at wowhead. See this thread http://support.wowhead-tooltips.com/threads/271-data-item-scaling-and-da... for more info.