emerge error

[atropos]

see the following

maruta root # emerge world
Calculating world dependencies ...done!
>>> emerge sys-libs/glibc-2.2.5-r2 to /

>>> Downloading ftp://sources.redhat.com/pub/glibc/releases/glibc-2.2.5.tar.bz2
wget: missing URL
Usage: wget [OPTION]... [URL]...

Try `wget --help' for more options.
!!! Couldn't download glibc-2.2.5.tar.bz2. Aborting.
!!! emerge aborting on /usr/portage/sys-libs/glibc/glibc-2.2.5-r2.ebuild .


I don't know what to do

plz help

My system's current portage version is 1.9.11 and "emerge rsync" has no problem...