关于DNS服务器

我在编辑DNS服务器配置文件/etc/named.conf的时候,老出现以下提示:
E325: ATTENTION
Found a swap file by the name "/etc/.named.conf.swp"
owned by: root dated: Thu Nov 13 20:17:03 2008
file name: /etc/named.conf
modified: YES
user name: root host name: bing
process ID: 13439
While opening file "/etc/named.conf"
dated: Fri Nov 14 00:15:33 2008
NEWER than swap file!

(1) Another program may be editing the same file.
If this is the case, be careful not to end up with two
different instances of the same file when making changes.
Quit, or continue with caution.

(2) An edit session for this file crashed.
If this is the case, use ":recover" or "vim -r /etc/named.conf"
to recover the changes (see ":help recovery").
If you did this already, delete the swap file "/etc/.named.conf.swp"
to avoid this message.
是什么意思啊,请教高手!!!!!!!