No Usersingroups can be scanned on all computers with French version (not MUI) of Windows XP with SP2 and SP3. We have many subsidiary over the world with OS in different languages but only FR XP has this problem.
This issue was already in 3.x and now in 4.0 beta as well.
19.02.2010 11:08:50: XXXXXXXXX USERSINGROUP Die Anfrage ist ungültig.
at System.Management.ManagementException.ThrowWithExtendedInfo(ManagementStatus errorCode)
at System.Management.ManagementObjectCollection.ManagementObjectEnumerator.MoveNext()
at LansweeperService.sweeperthread.GetTheUsersAndGroups(LS_Computer mycomputer, String section, SqlConnection& sqlcon)
(Sorry for german output)