Monday (27. march) I upgraded with Yumex the programs what where signed with +. Unfortunately I not remember which programs where these ones. After reboot Yumex/Yum cannot to find any repo site. Repo files are unchanged in my FC4. What can I do? Thanks: FB Yumex message: Cannot find a valid baseurl for repo: extras Yum message: ~]# yum update Setting up Update Process Setting up repositories http://rpm.livna.org/fedora/4/i386/RPMS.lvn/repodata/repom d.xml: [Errno 4] IOErr or: <urlopen error (2, 'Nincs ilyen f\xe1jl vagy k\xf6nyvt\xe1r')> Trying other mirror. http://livna.cat.pdx.edu/fedora/4/i386/RPMS.lvn/repodata/re pomd.xml: [Errno 4] I OError: <urlopen error (11, 'Er\xf5forr\xe1s ideiglenesen el\xe9rhetetlen')> Trying other mirror. http://wftp.tu- chemnitz.de/pub/linux/livna/fedora/4/i386/RPMS.lvn/repodat a/repom d.xml: [Errno 4] IOError: <urlopen error (11, 'Er\xf5forr\xe1s ideiglenesen el\x e9rhetetlen')> Trying other mirror. http://ftp-stud.fht- esslingen.de/pub/Mirrors/rpm.livna.org/fedora/4/i386/RPMS .lv n/repodata/repomd.xml: [Errno 4] IOError: <urlopen error (11, 'Er\xf5forr\xe1s i deiglenesen el\xe9rhetetlen')> Trying other mirror. Cannot open/read repomd.xml file for repository: livna failure: repodata/repomd.xml from livna: [Errno 256] No more mirrors to try. Error: failure: repodata/repomd.xml from livna: [Errno 256] No more mirrors to to try.