FYI, http://cran.r-project.org/src/base/NEWS.html [May 18, 2011] is for R v2.13.0 whereas http://cran.r-project.org/src/base/NEWS [July 8, 2011] is for R v2.13.1. The former is linked to on a few places on http://cran.r-project.org/. /Henrik