R help - Sep 2009 - Error in package management on R 2.9.2 GUI 1.29 Tiger build 32-bit

Dear R gurus,

I use the above release on my MacPro under Leopard 10.5.8 and I have  
no more access to the package manager and the CRAN binary list on  
package installer. Error messages in the console are :

Erreur : impossible de trouver la fonction  
"package.manager" (impossible to find function
"package.manager")
Erreur : impossible de trouver la fonction "browse.pkgs" (impossible  
to find function "browse.pkgs")

and I got a window :

Fetching Package List Failed

Any hint welcome.

===================================================================Bien
cordialement / Very truly yours / Mit freundlichen Gruessen,
Jean-Baptiste Marquette
Institut d'Astrophysique de Paris
CNRS - UMR 7095
Universit? Pierre & Marie Curie
98bis Bd Arago
75014 Paris - France
Tel +33 (0)1 4432 8196
Fax +33 (0)1 4432 8001
====================================================================