Twin directories of cran:

pkg://R-1.8.1.tgz:9407628/R-1.8.0/src/gnuwin32/  downloads[DIR]3  R-1.8.1.tgz/R-1.8.0/src/gnuwin32/cran/
pkg://R-1.9.0.tgz:9505598/R-1.8.1/src/gnuwin32/  downloads[DIR]3  R-1.9.0.tgz/R-1.8.1/src/gnuwin32/cran/
pkg://R-2.0.1.tar.gz:10645703/R-2.0.0/src/gnuwin32/  downloads[DIR]3  R-2.0.1.tar.gz/R-2.0.0/src/gnuwin32/cran/
pkg://R-2.0.1.tbz:11653643/R-2.0.1/src/gnuwin32/  downloads[DIR]3  R-2.0.1.tbz/R-2.0.1/src/gnuwin32/cran/
pkg://R-2.2.1.tbz:20808934/R-2.2.0/src/gnuwin32/  downloads[DIR]3  R-2.2.1.tbz/R-2.2.0/src/gnuwin32/cran/
pkg://R-2.4.1nb2.tgz:17193837/R-2.4.1/src/gnuwin32/  downloads[DIR]3  R-2.4.1nb2.tgz/R-2.4.1/src/gnuwin32/cran/
pkg://R-2.6.1.tbz:24615939/R-2.6.1/src/gnuwin32/  downloads[DIR]3  R-2.6.1.tbz/R-2.6.1/src/gnuwin32/cran/
pkg://R-2.7.1.tar.gz:16413667/R-2.7.0/src/gnuwin32/  downloads[DIR]3  R-2.7.1.tar.gz/R-2.7.0/src/gnuwin32/cran/
pkg://R-2.7.1.tbz:17348532/R-2.7.1/src/gnuwin32/  downloads[DIR]3  R-2.7.1.tbz/R-2.7.1/src/gnuwin32/cran/
pkg://R-Biobase-1.16.1-3.fc7.i386.rpm:2418557/R-2.7.2/src/gnuwin32/  info  downloads[DIR]3  R-Biobase-1.16.1-3.fc7.i386.rpm/R-2.7.2/src/gnuwin32/cran/
[DIR]  ftp://ftp.di.uminho.pt/pub/cran/
[DIR]  ftp://ftp.cs.cornell.edu/pub/smart/cran/
pkg://r-base-core-ra_1.1.1-1_alpha.deb:8795202/R-2.7.0-ra-1.1.0/src/gnuwin32/  info  downloads[DIR]3  r-base-core-ra_1.1.1-1_alpha.deb/R-2.7.0-ra-1.1.0/src/gnuwin32/cran/
pkg://r-base-core-ra_1.1.2-1_alpha.deb:8804198/R-2.7.1-ra-1.1.1/src/gnuwin32/  info  downloads[DIR]3  r-base-core-ra_1.1.2-1_alpha.deb/R-2.7.1-ra-1.1.1/src/gnuwin32/cran/
pkg://r-base-core_1.5.1-0woody1_hppa.deb:5224338/R-2.7.2-ra-1.1.2/src/gnuwin32/  info  downloads[DIR]3  r-base-core_1.5.1-0woody1_hppa.deb/R-2.7.2-ra-1.1.2/src/gnuwin32/cran/
pkg://r-base_2.0.1-1_all.deb:19112/R-1.9.1/src/gnuwin32/  info  downloads[DIR]3  r-base_2.0.1-1_all.deb/R-1.9.1/src/gnuwin32/cran/
pkg://r-base_2.1.0-1_all.deb:19884/R-2.0.1/src/gnuwin32/  info  downloads[DIR]3  r-base_2.1.0-1_all.deb/R-2.0.1/src/gnuwin32/cran/
pkg://r-base_2.1.1-1_all.deb:19964/R-2.1.0/src/gnuwin32/  info  downloads[DIR]3  r-base_2.1.1-1_all.deb/R-2.1.0/src/gnuwin32/cran/
pkg://r-base_2.2.1.orig.tar.gz:13665367/R-2.1.1/src/gnuwin32/  downloads[DIR]3  r-base_2.2.1.orig.tar.gz/R-2.1.1/src/gnuwin32/cran/
pkg://r-base_2.2.1.svn37642.orig.tar.gz:14064600/R-2.2.1/src/gnuwin32/  downloads[DIR]3  r-base_2.2.1.svn37642.orig.tar.gz/R-2.2.1/src/gnuwin32/cran/
pkg://r-base_2.3.1-1_all.deb:22666/R-alpha/src/gnuwin32/  info  downloads[DIR]3  r-base_2.3.1-1_all.deb/R-alpha/src/gnuwin32/cran/
pkg://r-base_2.4.0.20061125-1_all.deb:23594/R-2.3.1/src/gnuwin32/  info  downloads[DIR]3  r-base_2.4.0.20061125-1_all.deb/R-2.3.1/src/gnuwin32/cran/
pkg://r-base_2.4.1-1_all.deb:23708/R-patched/src/gnuwin32/  info  downloads[DIR]3  r-base_2.4.1-1_all.deb/R-patched/src/gnuwin32/cran/
pkg://r-base_2.5.1-1_all.deb:25012/R-2.4.1/src/gnuwin32/  info  downloads[DIR]3  r-base_2.5.1-1_all.deb/R-2.4.1/src/gnuwin32/cran/
pkg://r-base_2.7.0-1_all.deb:26542/R-2.6.2/src/gnuwin32/  info  downloads[DIR]3  r-base_2.7.0-1_all.deb/R-2.6.2/src/gnuwin32/cran/
pkg://r-base_2.7.1-1+lenny1_all.deb:30190/R-beta/src/gnuwin32/  info  downloads[DIR]3  r-base_2.7.1-1+lenny1_all.deb/R-beta/src/gnuwin32/cran/
pkg://r-base_2.7.2.orig.tar.gz:16466658/R-2.7.1/src/gnuwin32/  downloads[DIR]3  r-base_2.7.2.orig.tar.gz/R-2.7.1/src/gnuwin32/cran/
pkg://r-base_2.7.2~20080816.orig.tar.gz:16404890/R-2.7.2/src/gnuwin32/  downloads[DIR]3  r-base_2.7.2~20080816.orig.tar.gz/R-2.7.2/src/gnuwin32/cran/
pkg://r-base_2.8.0~20081006.orig.tar.gz:16543281/R-beta/src/gnuwin32/  downloads[DIR]3  r-base_2.8.0~20081006.orig.tar.gz/R-beta/src/gnuwin32/cran/
pkg://r-bioc-repostools_1.10.0-1_all.deb:2880/R-beta/src/gnuwin32/  info  downloads[DIR]3  r-bioc-repostools_1.10.0-1_all.deb/R-beta/src/gnuwin32/cran/
[DIR]  ftp://ftp.au.freebsd.org/disks/la3/.p/sage/packages/optional/r-2.6.1.p6/src/src/gnuwin32/cran/
[DIR]  ftp://ftp.iitm.ac.in/cran/