After my post, I found a proposed solution elsewhere. Microsoft Technet
article [URL="http://technet.microsoft.com/en-us/library/bb457178.aspx#EBAA"]http://technet.microsoft.com/en-us/library/bb457178.aspx#EBAA[/URL]
gives complete information.
Step 1: In the search window, pick "Change preferences". Then pick
"Change Internet search behavior", and select "With Classic Internet
search". I didn't realize I was using a "search companion" because I
didn't see an animated screen character.
This step alone didn't prevent attempts to connect to IP 65.55.11.179
(sa.windowsmedia.com.akadns.net).
Step 2: The connection to this IP is for the purpose of downloading
newer XML files
used by the Search Companion, EVEN WHEN "Classis Internet search" is
selected and "Search Companion" turned off.
To prevent this connection, the MS article instructs you to modify an
Administrative Template using a more involved procedure (installing
GPMC, ...). I'm on a corporate domain, and I'm not sure this would work
for me.
>> Stay informed about: Windows Explorer Search tries to contact Microsoft