emerge -u world >>> Downloading http://www.us.kernel.org/pub/linux/utils/kernel/hotplug/udev-079.tar.bz2 --23:20:49-- http://www.us.kernel.org/pub/linux/utils/kernel/hotplug/udev-079.tar.bz2 => `/usr/portage/distfiles/udev-079.tar.bz2' Resolving www.us.kernel.org... 128.30.2.36, 128.175.60.102, 144.92.104.38, ... Connecting to www.us.kernel.org|128.30.2.36|:80... connected. HTTP request sent, awaiting response... 404 Not Found 23:20:53 ERROR 404: Not Found. !!! Couldn't download udev-079.tar.bz2. Aborting. Looking in the hotplug folder on kernel.org, I found that the file is not bzipped but rather gzipped. http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev-079.tar.gz is a valid URL.
You need to wait a bit until in propagates on the mirrors... >>> Downloading http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev-079.tar.bz2 --10:42:55-- http://www.kernel.org/pub/linux/utils/kernel/hotplug/udev-079.tar.bz2 => `/usr/portage/distfiles/udev-079.tar.bz2' Resolving www.kernel.org... 204.152.191.37, 204.152.191.5 Connecting to www.kernel.org|204.152.191.37|:80... connected. HTTP request sent, awaiting response... 200 OK Length: 222,080 (217K) [application/x-bzip2] 100%[=================================================================================================>] 222,080 117.98K/s 10:42:57 (117.64 KB/s) - `/usr/portage/distfiles/udev-079.tar.bz2' saved [222080/222080]