Broken eshell tab completion (pcomplete) over ssh

[pinkiesOut]

Although tab completion in eshell works on my local system, pressing tab when 
connected to another machine over ssh results in the insertion of a literal tab 
character. Running pcomplete manually with M-x produces the same result, 
confirming that the function is properly bound to my tab key. Some friendly 
folks at #emacs point out that tab completion in eshell should just work over 
ssh.

Oddly, I do not have this problem when connecting to the same server using term 
or ansi-term mode. Does anyone have an idea of what might be breaking this 
functionality? 

For the record, I am running emacs 23.3.50.1, yet I see a similar unanswered 
question regarding eshell in emacs 24.0.94 at the following URL:

http://superuser.com/questions/402747/emacs-eshell-over-ssh-not-obeying-key-commands-or-elisp

Thanks