Comment 28 for bug 128180

I can confirm this bug on Feisty.
 I've update r from http://cran.r-project.org/bin/linux/ubuntu/
and I get this:

MyUSER@MyHOST:~$ python
Python 2.5.1 (r251:54863, Mar 7 2008, 03:41:45)
[GCC 4.1.2 (Ubuntu 4.1.2-0ubuntu4)] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import rpy
RHOME= /usr/lib/R
RVERSION= 2.7.0
RVER= 2070
RUSER= /home/MyUSER
Loading Rpy version 2070 ..
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/usr/lib/python2.5/site-packages/rpy.py", line 112, in <module>
    exec("import _rpy%s as _rpy" % RVER)
  File "<string>", line 1, in <module>
ImportError: No module named _rpy2070