Using telnet - enter causes 2 line breaks

[tacotaco]

A simple issue I hope, but I don't know jack about linux.

on any computer, when I use telnet to my linux box, and hit enter, I get two line breaks.

For example, just hitting enter produces:
sh-2.02#
sh-2.02#.

This also is even worse when using telnet on OSX. I get doubles of everything, including input. So when I want to type "ping" I get ppiinngg instead, but the weird thing is, the command still works.

Any ideas what's up?

[rcgreen]

It's not two line breaks. It's a feature called "local echo", and
should be configurable at the client. some servers do not
"echo" back the things you have typed, and you get nothing
on your screen, so local echo puts what you typed on the
local screen. If the server also echos, then you get repetition.

[tacotaco]

Weird. Makes sense though. Funny thing is, I turned local echo off on putty and it still echos.