Why TotalSessions is 3 when I have only two users logined?

Hi,

I'm using the following scripts to count how many users logged on through TermService, but I got a "3", that's weird, as I only have one user logged on locally, and another through terminal service, 

The users tab in taskmgr shows exactly two users. What's wrong with it?

Set objTermServ = GetObject ("winmgmts:{impersonationLevel=impersonate}!Win32_Service='TermService'")
MsgBox objTermServ.TotalSessions