I'm pretty new to yum, so can anyone say whether there are any subtleties to upgrading SL 4.0 or 4.1 to SL 4.2 using yum? The nicely detailed "How To Upgrade To The Latest Release" can clearly be adapted to this task, but are there any gotchas when you do that? -- John Haggerty email: [log in to unmask] voice/fax: 631 344 2286/4592 http://www.phenix.bnl.gov/~haggerty