Currently logged on users

Currently logged on users

I am trying to answer the question "who is logged on to all computers at this very moment".  When I look at the Currently Logged On Users report it shows a user as currently logged on to a machine, but when I check the computer itself the user is not actually logged on.  Is this a bug?  Is there a way to refresh the report so that it is actually accurate for this moment, or is this report really a last logged on user report rather than a currently logged on user report?

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