Hi, As far as I'm aware SL 5.6 isn't out yet - I don't think I've seen a release announcement, it's not on ftp.scientificlinux.org, and the web site front page lists 5.5 as the latest, and SL 6 was being considered a higher priority. However, someone from CERN IT (discussing some experiment software which seems to break on 5.6) has just told a grid deployment meeting that: "FNAL released SL 5.6 last week" Clearly either my understanding is flawed or his is; which is it please? Ewan