Error: Multiple results returned for DN 'cn=virusalert,dc=domain,dc=ext'

[royce.smallbone at laneend.net]

A bug?

Goto "Distribution Lists"
Click "Modify" next to one of the lists ( e.g. virusalert )
Tick "Hidden"
Click "Submit"

Go back to "Distribution Lists"
Click "Modify" on the same list as above
Un-tick "Hidden"
Click "Submit"


Go back to "Distribution Lists"
Click "Modify" on the same list as above
Receive Error "Error: Multiple results returned for DN
'cn=virusalert,dc=domain,dc=ext'"