Dear You, Just found some of problem from the web : http://www-unix.globus.org/mail_archive/discuss/2004/09/msg00297.html http://www.fedoraforum.org/forum/archive/index.php/t-23101.html http://www.nvnews.net/vbulletin/printthread.php?t=29208&pp=40 https://init.linpro.no/pipermail/skolelinux.no/cinelerra/2004-October/002553.html I also can't to install / upgrade glibc ( rpm ) with FC2... PS : it is no problem if I install FC2 with all packages at first time! Edward. ?