The files... ftp://elsie.nci.nih.gov/pub/tzcode2004b.tar.gz ...and... ftp://elsie.nci.nih.gov/pub/tzdata2004b.tar.gz ...are now available. These contain the data changes circulated last week on the time zone mailing list by Paul Eggert--most importantly, they include updates for Argentina. I wanted to get these out quickly since they effect present-day operations down south. I'm holding off (briefly, I hope) on incorporating code changes until I can do a more thorough review than I have time for just now. --ado