Linux emacs 22.1 + tramp: 2.1.12: tramp completion does not work for me.

[Michal]

Hallo group members.

Did You experience any problems with it?

I do the following.

(tramp-get-completion-function "scp"):
((tramp-parse-connection-properties "scp") (tramp-parse-shosts 
"~/.ssh/known_hosts"))

(tramp-get-completion-function "ssh")
((tramp-parse-connection-properties "ssh") (tramp-parse-shosts 
"~/.ssh/known_hosts"))

$ grep 10.102.12.89 ~/.ssh/known_hosts
10.102.12.89 ssh-rsa AAAAB3........

now, when I put:
C-x C-f /ssh:10<TAB>  no completion is present....

or even
C-x C-f /s<TAB>
Click <mouse-2> on a completion to select it.
In this buffer, type <S-Return> to select the completion near point.

Possible completions are:
sbin/                              sys/
selinux/                           srv/


...no ssh:, scp:... present...

My tramp configuration is:
(setq pp-tramp-dir "/emacs-packages-22/tramp-2.1.12")
(add-to-list 'load-path (concat pp-tramp-dir "/lisp"))

(let ((partial-completion-mode t))
  (require 'tramp))

(setq password-cache-expiry nil)

C-h v tramp-version:
tramp-version is a variable defined in 
`/emacs-packages-22/tramp-2.1.12/lisp/trampver.elc'.
Its value is "2.1.12"


Have You got idea what might be the reason?

I wonder if it can be the fact that I do not use built in tramp 2.0.55 from 
emacs 22.1.

Regards,
Michal