R SIG Debian - Sep 2011 - [SOLVED] Rscript path problem on R 2.13.1 for Ubuntu 11.04?

Dear all,

I Located my previous problem: an orphan Rscript was still in /usr/local/bin,
and since /usr/local/bin came before /usr/bin/ in the PATH, the
"wrong"
Rscript was called. Removing /usr/local/bin/Rscript solved the installation
issue with Ubuntu 11.04+R 2.13.1 but I'm still unsure on the exact details
why/where/when the error "Rscript execution error: No such file or
directory"
is given.
Yours
Johan

Previous error messages:
>The behavior of Rscript on my (11.04 + 2.13.1) machine:
>  $ which Rscript
>  /usr/local/bin/Rscript
>  $ Rscript --version
>  R scripting front-end version 49838
>  $ Rscript -e 'rnorm(1)'
>  Rscript execution error: No such file or directory
>on my 11.04 + 2.12.1:
>  $ which Rscript
>  /usr/bin/Rscript
>  $ Rscript --version
>  R scripting front-end version 2.12.1 (2010-12-16)
>  $ Rscript -e 'rnorm(1)'
>  [1] 0.9278564