dsconfigldap results in dual WorkGroup Manager entries

Hi everyone,
I’m having a bit of a problem. I want to join multiple computers to my OD domain with an ARD unix command. When I test the command however, I get two entries in WorkGroup Manager. Does anyone know what I’m doing wrong? I’m using 10.5.x clients and servers that are all fully patched. Here are the details.

I execute:

dsconfigldap -v -f -a xserve.mydomain.com -n xserve.mydomain.com -c `scutil --get ComputerName` -u odadminuser -p odadminpass
sleep 1 ;

dscl /Search -create / SearchPolicy CSPSearchPath ;
dscl /Search -append / CSPSearchPath /LDAPv3/xserve.mydomain.com ;

sleep 1
dscl /Search/Contacts -create / SearchPolicy CSPSearchPath ;
dscl /Search/Contacts -append / CSPSearchPath /LDAPv3/xserve.mydomain.com ;

Then workgroup manager then shows two entries for that computer:

computername$
computername.mydomain.com$

computername$ has the correct entries for the Ethernet ID and other fields, so any ideas on how I get rid of the extranious entry? My apologies if this has been covered before, but I couldn’t find anything when I searched the forum.

Thanks in advance!

-Brad