writes "Even though I have Automatic Updates turned off, on August 28, 2007, between 3:49 and 3:51 AM PDT, Microsoft installed new files on my Windows XP computer."
Nine files are updated on Vista and on XP SP1, a different set of on each, relating to Windows Update itself. Microsoft-watch.com
's Joe Wilcox and ZDnet
's Adrian Kingsley-Hughes confirm the stealth update.