「(2)無線LANを自動起動する」で、こんな表示が出ました。
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ubuntu@omap:~$ cd /etc/network
ubuntu@omap:/etc/network$ sudo cp interfaces interfaces.org
[sudo] password for ubuntu:
ubuntu@omap:/etc/network$ sudo vi /etc/interfaces
E325: ATTENTION
Found a swap file by the name "/etc/.interfaces.swp"
owned by: root dated: Fri Apr 29 04:09:12 2011
file name: /etc/interfaces
modified: YES
user name: root host name: omap
process ID: 551
While opening file "/etc/interfaces"
(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/interfaces"
to recover the changes (see ":help recovery").
If you did this already, delete the swap file "/etc/.interfaces.swp"
to avoid this message.
"/etc/interfaces" [New File]
Press ENTER or type command to continue
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詰まったら、電源を落として再起動させていたので、
2重になってしまったのかも。