On Ubuntu 10.04 I updated a load of the R (ubuntu) packages this morning. Then the first R script I tried told me zoo wasn\'t built for R 3.0.0. So I do sudo R
and
The required command is not what you state: update.packages(ask=F)
but rather the following update.packages(ask=FALSE, checkBuilt=TRUE)
.
Try that, and all the still-maintained and available CRAN packages will of course be taken care of. Things you installed from github, Simon's rforge, r-forge, or other random repo will need manual help.
This issue has been discussed at length at various venues since R 3.0.0 came out.