[R-sig-Debian] Problem upgrading to 2.11

[Ben Domingue]

Hello,
I am trying to upgrade to 2.11 from 2.10 in the hopes of gaining
TCL/TK capabilities (let's pretend for the moment that this should
work).  I've added "deb http://cran.stat.ucla.edu/bin/linux/ubuntu
lucid/" to /etc/apt/sources.list as described in the guide and have
run
apt-get update
apt-get install r-base r-base-dev
Things seem to work.  When I look at the installed packages on my
machine, I see:
bd at bd-laptop:~$ apt-show-versions | grep "r-base"
r-base/unknown uptodate 2.11.1-2lucid0
r-base-core/unknown uptodate 2.11.1-2lucid0
r-base-dev/unknown uptodate 2.11.1-2lucid0
But when I run R, I'm still running 2.10:

> sessionInfo()
R version 2.10.1 (2009-12-14)
x86_64-unknown-linux-gnu

locale:
[1] C

attached base packages:
[1] stats     graphics  grDevices utils     datasets  methods   base
> R.version
               _
platform       x86_64-unknown-linux-gnu
arch           x86_64
os             linux-gnu
system         x86_64, linux-gnu
status
major          2
minor          10.1
year           2009
month          12
day            14
svn rev        50720
language       R
version.string R version 2.10.1 (2009-12-14)


What's going on?  Sorry if this has been addressed before; I've been
unable to find it in the archives.

Ben Domingue