I was seeing duplicate people returned when searching for someone.  Here are a few things I did to locate and fix the problem.

First, check the People scope in the SSP.

Shared Services Administration: SharedServices1 > Search Administration > Scopes

http://moss1:8888/ssp/admin/_layouts/viewscopesssp.aspx?mode=ssp

This scope should have a rule of:

contentclass = urn:content-class:SPSPeople

     Behavior: Require

Take not of the Item Count.

Now take a look at the User Profiles and Properties page.

Shared Services Administration: SharedServices1 > User Profile and Properties

http://moss1:8888/ssp/admin/_layouts/ProfMain.aspx

In the Profile and Import Settings section look at the first item Number of user profiles:.  If this number doesn’t match the Item Count from the Scope you are    pulling too many items into your Local Office SharePoint Server sites  Content Sources.

To check Local Office SharePoint Server sites 

Shared Services Administration: SharedServices1 > Search Administration > Content sources

http://moss1:8888/ssp/admin/_layouts/listcontentsources.aspx

Edit  the Local Office SharePoint Server sites content source

In the Start Addresses section should be the following items

http://(server): (port)/ (SSP)

http://(portalsite)/ (URL of main portal site)

sps3://(server): (port)/ (My Site Host)      Crawl Settings: Crawl everything under the hostname for each start address

Crawl Schedules: Full Crawl: At 12:00 AM every day

Incremental Crawl: Every 2 hour(s) from 7:00 AM for 14 hour(s) every day

Updating the  Local Office SharePoint Server sites fixed my problem.