Cisco :: LMS 4.1 Device Change Audit Lists Wrong Users?

I have noticed that under the Device Change Audit list under the configuration dashboard. LMS lists the wrong user for the last change. For example. User ABC performed a change on a switch yesterday but switch shows user XYZ has performed the change.
 
e.g.
 
SwitchA
 
! Last configuration change at 16:27:06 AEST Mon Aug 15 2011 by ABC
 
User XYZ then performs changes on switchB, switchC. These show up correctly. but the change on switchA shows user XYZ instead of ABC.
 
User XYZ has never logged into the switchA in question.