Salve, riscontro il seguente problema quando tento di editare il file sudoers con visudo:

E325: ATTENTION
Found a swap file by the name "/etc/.sudoers.tmp.swp"
owned by: root dated: Sun Sep 14 16:49:58 2008
file name: /etc/sudoers.tmp
modified: YES
user name: root host name: gulliver-laptop
process ID: 6705
While opening file "/etc/sudoers.tmp"
dated: Sun Aug 31 19:35:40 2008

(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/sudoers.tmp"
to recover the changes (see ":help recovery").
If you did this already, delete the swap file "/etc/.sudoers.tmp.swp"
to avoid this message.
"/etc/sudoers.tmp" 23 lines, 470 characters
Press ENTER or type command to continue

Please, help me!

TIA!