Seating players at the wrong limit

[jacki]

In my recent trip to Vegas, this happened twice at the Mirage.
The first time, my friend - who is new to casino poker - and I went to play 3/6. We both got called at the same time and got sent to different tables. 20 minutes later, my friend is telling me he's leaving because he dropped $100 at a 6/12 table they seated him at by mistake.

Two nights later, I went by myself to play 6/12. As the floorperson is directing me to the other floorperson with the 6/12 list, a guy behind me asks if he can play poker. He's obviously never played before, and asks for the lowest limit available. The floorperson says "you want 3/6, I'll put you on the list."
10 minutes later, a new 6/12 table is started up, and guess who's at my table? The newbie that was asking for the lowest limit there.

Mistakes? Or would they do something like this on purpose?