Package "field" missing from repositories

Hi all; 
After an overnight Ubuntu upgrade to 10.10, I had to reinstall some R packages.  But the "fields" package appears to be missing from my usual repository, and a few of the other repositories I've tested:

install.packages('fields',lib='/usr/local/lib/R/site-library',repos='http://cran.stat.sfu.ca')

Warning message:
In getDependencies(pkgs, dependencies, available, lib) :
  package ?fields? is not available

The package 'fields' *does* appear in the list of available packages at my local repository: http://cran.stat.sfu.ca/, and I've installed the dependencies ('spam').

Any suggestions?

Thanks!

Joseph Shea
Post-Doctoral Fellow
Departments of Geography
University of British Columbia and
University of Northern British Columbia
Phone: 250-960-5840
Email: joseph.shea at geog.ubc.ca