Pasting into SSH fails every 512 characters

Question

I've noticed in the past that when I paste into a terminal window connected over SSH that occasionally characters get dropped from the stream. Usually I ignore the issue and search/replace them manually, but this time I investigated more.

I found out that ever 512th character doesn't make it to the server. So, if I paste the following string:

_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________X______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________X______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________X______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________X_______________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________X

...all I see in the terminal window is a row of underscores.

This happens pretty consistently across the various servers I need to connect to - is it a problem with my terminal, the SSH setup on the servers, SSH in general or something else?

EDIT:

I'm using OpenSSH_5.2p1, OpenSSL 0.9.8l 5 Nov 2009 on Snow Leopard, but noticed the issue on Leopard previously too

Answer 1

Almost certainly your SSH client, I use putty and routinely past in more than 512 chars, I couldn't recommend it more.

Answer 2

Some Operating Systems use short buffers for the pseudo-tty pipes and when they are overflooded they just drop data