Changing expiration time of subkeys

[taurus]

Hi all,

I am trying to change the expiration time of 2 sub-keys with no success.
I edit the main key and with command expire I selected the uid(s) and  
the result is this:

Secret key is available.

pub  4096R/C9CFBFA0  created: 2008-12-31  expires: never       usage: SC
                      trust: ultimate      validity: ultimate
sub  4096R/F2A8860E  created: 2008-12-31  expired: 2009-12-31  usage: E
	^^^^^^^^^^^				^^^^^^^^^^^^^^
sub  1024R/ED88A3D8  created: 2009-01-13  expires: 2010-01-13  usage: S
	^^^^^^^^^^^^				^^^^^^^^^^^^^^		
[ultimate] (1). N1 <n at m.com>
[ultimate] (2)  N2 <n at mail.com>
[ultimate] (3)  [jpeg image of size 10211]

Command> check
uid  N1 <n at m.com>
sig!3        C9CFBFA0 2010-01-05  [self-signature]
uid  N2 <n at mail.com>
sig!3        C9CFBFA0 2010-01-05  [self-signature]
uid  [jpeg image of size 10211]
sig!3        C9CFBFA0 2010-01-05  [self-signature]

Command> toggle

sec  4096R/C9CFBFA0  created: 2008-12-31  expires: never
ssb  4096R/F2A8860E  created: 2008-12-31  expires: never
						^^^^^^^^^
ssb  1024R/ED88A3D8  created: 2009-01-13  expires: never
						^^^^^^^^^
(1)  N1 <n at m.com>
(2)  N2 <n at mail.com>
(3)  [jpeg image of size 10211]

And this key continues unavailable for signing or encrypting in Mail  
application.
I can't figure what I'm doing wrong, any help is welcome.

TIA,
taur.