My camera tells me I'm a midget and other woes

Whenever I start a multiplayer game or join a server…my camera is always right in the middle of the ground…the line of where the floor should be is right in the middle of my camera. Of course, I’m still the same HEIGHT as always so things get a tad confusing. I also have difficulty seeing or talking to other players. This isn’t the case on ALL servers but it happens quite frequently. What’s going on here?