How to re-lock ssh private key?

[Gordon Messmer]

Wolfgang S. Rupprecht wrote:
> Gordon Messmer <yinyang at eburg.com> writes:
>> I think you're confused by the fact that the identities are still
>> listed by "ssh-add -l".  They're certainly deactivated and require a
>> passphrase in order to be used again (tested in GNOME 2.24).
> 
> No, I'm confused by the fact that I can still ssh to remote machines
> without entering my key-unlocking passphrase. ;-)

Like I said, this works properly for me under GNOME 2.24 (F10).  Since 
you didn't include any details of your own setup, I can't comment on why 
it's not working for you the way that it should.