Yum is failing for me fairly spectacularly and I'm not sure if the problem is yum or me. The error I get is: # yum update yum Setting up Update Process Setting up Repos Traceback (most recent call last): File "/usr/bin/yum", line 7, in ? yummain.main(sys.argv[1:]) File "/usr/share/yum-cli/yummain.py", line 68, in main result, resultmsgs = base.doCommands() File "/usr/share/yum-cli/cli.py", line 413, in doCommands return self.updatePkgs() File "/usr/share/yum-cli/cli.py", line 932, in updatePkgs self.doRepoSetup() File "/usr/share/yum-cli/cli.py", line 81, in doRepoSetup repo.getRepoXML(text=repo) File "repos.py", line 589, in getRepoXML File "repos.py", line 566, in get File "mirror.py", line 414, in urlgrab File "mirror.py", line 400, in _mirror_try File "grabber.py", line 619, in urlgrab File "grabber.py", line 548, in _retry File "grabber.py", line 605, in retryfunc File "grabber.py", line 728, in __init__ File "grabber.py", line 795, in _do_open File "grabber.py", line 886, in _make_request File "/usr/lib/python2.3/urllib2.py", line 326, in open '_open', req) File "/usr/lib/python2.3/urllib2.py", line 306, in _call_chain result = func(*args) File "/usr/lib/python2.3/urllib2.py", line 980, in file_open return self.open_local_file(req) File "/usr/lib/python2.3/urllib2.py", line 1004, in open_local_file if not host or \ socket.gaierror: (-2, 'Name or service not known') My yum configuration is brand new since my old configuration suddenly vanished on all four of my machines (I hadn't expected that!). The only two files I have changed are: # cat sl.repo [main] [sl-base] name=SL 4 base baseurl=file://nfs/SL/40/$basearch/SL/RPMS/ enabled=1 # cat sl-errata.repo [main] [sl-errata] name=SL 4 base baseurl=file://nfs/SL/40/$basearch/errata/SL/RPMS/ enabled=1 Any suggestions? Thanks John