[问题]关于源选择的问题 8.04版

[wavydoom]

我现在在 系统－》系统管理－》软件源 里面的“下载自”，选择“其他”，然后点击“选择最佳服务器”
经过系统自己测试，帮我选择的是 韩国的 LETS OPEN MIRRO服务器。

然后我运行
apt-get update
ape-get dist-upgrade
这样操作也是安全且正确的吗？

因为我以前默认的中国服务器这两天一直都没有提示升级，但是换成这个服务器了就找到362个软件需要升级。
请问我这样操作对吗？有这么多需要升级吗？因为我大前天装的系统，已经在中国默认服务器升级过一次了。

万分感谢！













以下是我运行sudo gedit /etc/apt/sources.list 后的内容




# deb cdrom:[Ubuntu 8.04 _Hardy Heron_ - Alpha i386 (20080205)]/ hardy main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

deb http://cn.archive.ubuntu.com/ubuntu/ hardy main restricted
deb-src http://cn.archive.ubuntu.com/ubuntu/ hardy main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://cn.archive.ubuntu.com/ubuntu/ hardy-updates main restricted
deb-src http://cn.archive.ubuntu.com/ubuntu/ hardy-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb http://cn.archive.ubuntu.com/ubuntu/ hardy universe
deb-src http://cn.archive.ubuntu.com/ubuntu/ hardy universe
deb http://cn.archive.ubuntu.com/ubuntu/ hardy-updates universe
deb-src http://cn.archive.ubuntu.com/ubuntu/ hardy-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://cn.archive.ubuntu.com/ubuntu/ hardy multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ hardy multiverse
deb http://cn.archive.ubuntu.com/ubuntu/ hardy-updates multiverse
deb-src http://cn.archive.ubuntu.com/ubuntu/ hardy-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://cn.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse
# deb-src http://cn.archive.ubuntu.com/ubuntu/ hardy-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository. This software is not part of Ubuntu, but is
## offered by Canonical and the respective vendors as a service to Ubuntu
## users.
# deb http://archive.canonical.com/ubuntu hardy partner
# deb-src http://archive.canonical.com/ubuntu hardy partner

deb http://security.ubuntu.com/ubuntu hardy-security main restricted
deb-src http://security.ubuntu.com/ubuntu hardy-security main restricted
deb http://security.ubuntu.com/ubuntu hardy-security universe
deb-src http://security.ubuntu.com/ubuntu hardy-security universe
deb http://security.ubuntu.com/ubuntu hardy-security multiverse
deb-src http://security.ubuntu.com/ubuntu hardy-security multiverse