Security at my bank

I went to the drive through the other day to deposit some checks... Now this is a typical drive through except the bank had removed the teller window and replaced it with a monitor in a weatherproof steel box. While filling out my deposit slip I looked up and noticed that the screen saver on the monitor was the Microsoft Windows 2000 logo. As a web developer I go through pains to remove all traces of OS version, server version etc. to give attackers less info on what is in the black box. So is this a vulnerability or just a comment on the state of the technology at that particular branch?