insert problem

[mhobbs]

I keep getting this error

                ('username', 'Oct 16, 2001 14:23', 1, 0, '00000019',
'patton1.domain.com.au', 6)': Server message number=2627 severity=14 state=1
line=3 server=ntserver procedure=calls_insert text=Violation of PRIMARY KEY
constraint 'pk_ServerPorts': Attempt to insert duplicate key in object
'ServerPorts'.Server message number=3621 severity=0 state=0 line=3
server=ntserver procedure=calls_insert text=Command has been aborted.

My set up is
Radiator using emerald.cfg to back into platpus
I have 3 portmaster3 which don't cause this problem
And 2 (recently added) patton2800 NAS boxes which cause the above problem.