[BioC] installation problems

[Yectli A Huerta]

i having issues installing Rgraphviz. i installed the prereqs
from the at&t bell labs. the latest. i'm using R 1.8. below are
my error messages. any help will be appreciated.

thanks,

-- 
Yectli

* Installing *source* package 'Rgraphviz' ...
** libs
`Rgraphviz.so' is up to date.
** R
** inst
** save image
Loading required package: graph
Error in bindingIsLocked(m1, where) : not an environment
Error in setClass("graphNEL", representation(nodes = "vector", edgeL = "list"),
 :
        Error in contained classes ("graph") for class "graphNEL"; class definition removed from "graph"
[1] FALSE
Loading required package: graph
Error in bindingIsLocked(m1, where) : not an environment
Error in setClass("graphNEL", representation(nodes = "vector", edgeL = "list"),
 :
        Error in contained classes ("graph") for class "graphNEL"; class definition removed from "graph"
Error: Rgraphviz requires package graph
Execution halted
ERROR: execution of package source for 'Rgraphviz' failed
** Removing '/soft/local/lib/R/library/Rgraphviz'