[R] MASS need R >= 2.4.0!!!

[Ronaldo ReisJunior]

Hi,

I have R 2.3.1 installed by debian páckage.

I install  only the base and recommended R packages from Debian source, all 
others packages I install from the R source at CRAN.

But, I try to use library MASS, but I received this message:

> library(MASS)
Error: This is R 2.3.1, package 'MASS' needs >= 2.4.0

What is the problem?

Inte
Ronaldo 
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