crobb305 - 1:20 pm on Jun 4, 2009 (gmt 0)
Ted, are you observing any of the -30/-50 sites recovering after a short period of time? Or are they sticking there? Also, could on-site changes made a month ago suddenly trigger -30/-50 for certain terms within the past day or so? I am not sure what the time lag might be if the two are related.