That's not a noob problem. It isn't unreasonable to think that a map by a certain name is that map. Add to that the difficulty of where to get the "proper" new map and you have a recipe for confusion. Not to mention that someone who relies on autodownload is gonna have a hell of a time figuring out why the map they download from <name> server suddenly doesn't work right at all on that same server.
Telling people in game to download the proper map is a piss poor way to do it (mind you, I do it too

) or to inform players of anything of import, mind you. This is especially true on SST where the amount of text scrolling by can be great.
I would love it if maps had a standard where, like on pulse, the beginning spectator spot had a scrolling message that was configurable globally by the server operator (which pulse isn't I know, but... I can dream

)