ZDNet blogger Adrian Kingsley-Hughes says he has confirmed that Microsoft has started updating files on computers running Windows XP and Vista, even when users have turned off the automatic-update feature.
Scott Dunn at Windows Secrets says companies are getting worked up about the stealth updates. Many companies require patches to be tested before being widely installed, he points out.
He said the files being altered are nine small executables on XP and nine on Vista that Windows Update uses.
eWEEK also reported the updates were being installed without users' consent.