macdave - 7:44 pm on Dec 16, 2006 (gmt 0)
This looks more like a glitch than an actual update. Too much weirdness going on with Sitemaps. We're in the same boat as others: verification status reverted to "pending", very old "last crawled" date, number of URLs indexed dropped by 50%. Traffic is off by about 20%, though I haven't seen much change in any of my benchmark SERPs.