I thought that normal BSODA vending machines were removed...

[ᴋoa]

But I found one in a hallway, is this rare? seed: 1630392980 (Floor 2, left hallway after starting the floor.)

[A Strange Guy Called Klaz]

I don't know what the hell made you think Normal BSODA machines were removed.

I can tell you that 0.6 made them *RARE*. The Diet BSODA's only real difference is that the splash lasts 3 seconds rather than 30. You can get the regular BSODA in Johnny's Store and in Faculty Rooms on Floors after F1.