We see a few complaints about a problem with Contacts updating from the GAL:
“My personal contacts are being updated with information in the GAL. I have a personal contact for another person that is in the GAL and it has slightly different information than is in the GAL but Outlook synchronized this contact information with the GAL and replaced the information in the contact with what is in the GAL. I never clicked on the “Update” button in the Contact ribbon, so is Outlook automatically doing this?”
This is a feature of Outlook’s Social Connector (aka the People Pane) – there is an option to update contacts and its enabled by default.
When it’s enabled, changes will be updated in the Contact with a “Details Changed” note added to the Notes field, at the end of any notes already in the Notes field.
To disable, go to People Pane button and select Account Settings to open the Social Connector settings, then click the Settings button to open the Update dialog.
Screenshots of the notes field and of the dialog are posted at http://www.outlook-tips.net/howto/contact_updates.htm