Error: "user adm does not exist"

[Mark Phillips <mark@ist.flinders.edu.au>]

I'm trying to start the licence manager for matlab and it comes up with

su: user adm does not exist
su: user adm does not exist
su: user adm does not exist

Is "adm" some kind of standard user on unix systems that for some reason
doesn't exist in debian?

Thanks,

Mark.

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