noboby with a shell !!

[Yoann <debian-yoann@ifrance.com>]

hi,

I look at in the file /etc/passwd on my server today, and I saw the user 
nobody has a shell !!. When I installed my debian (sarge, I know it's 
bad, but it's just a server for me...) I put /bin/false. A few days ago, 
while an upgrade, apt asked to me to upgrade that file to the new 
version and answer yes, so I think it come from that action, but it 
could be unsecure to put /bin/sh for nobody ?

nobody:x:65534:65534:nobody:/nonexistent:/bin/sh
                                         ^^^^^^^^
I change to :

nobody:x:65534:65534:nobody:/dev/null:/bin/false

Yoann