Installed Kanaka in our OES11SP1 cluster , most users connect without issue however one user is getting

CSM: Failed to authenticate 'useridredacted'; Result = 48.

in the Kanaka Logs.

User can log into Novell via Windows client with no issues, All users have UP installed (we're an IDM shop).

It's Mac OSX mountain lion and kanaka 2.70 client......

any idea? thanks in advance!