The GB OTA update was installed this afternoon.  This evening I downloaded Pete's Motorola Root Tools v1.03, unzipped, and ran it.  It appeared to complete the process so I closed the program and unplugged the phone from the computer.  Titanium Backup indicated the phone was not rooted so I ran Pete's again.  It failed during "Running exploit step 3 of 3".  The text stated "adb could not be granted root access via local.prop method.  Try again from the start, but if the problem continues, check your version of Gingerbread -- hopefully you don't have a version where this exploit is fixed."  Another attempt was made with the same results.  Should I unroot (there's a warning in Pete's program about that), try to root again, wait for a revised version, do without, what?  Thanks fellow DG2ers.