John and Dirk Thanks you both for this, I did search the archives (probably using the wrong terms) and only found vague mention to the issue, but a Wiki entry giving the sort of overviw you have just given might be useful.
It's seems you are forced to do a bit of mix and match becuase if where the differenet packages are available. Graham _______________________________________________ R-SIG-Debian mailing list R-SIG-Debian@r-project.org https://stat.ethz.ch/mailman/listinfo/r-sig-debian