alt+f7 gain full access to a password protected account

[Goldy]

On ubuntu 10.04, I choose System > Disconnect > Swich User,
then at the login screen I click Ctrl+Alt+F4 to get a command line over a black screen. the problem: clicking Alt+F7 redirect back to my password 'protected' desktop WITHOUT entering password!

How is it possible and how can I fix it?

Description: Ubuntu 10.04.3 LTS
Release: 10.04

apt-cache policy login
login:
  Installed: 1:4.1.4.2-1ubuntu2
  Candidate: 1:4.1.4.2-1ubuntu2.2

I expect to go back to the login screen, NOT skipping the password. the whole idea of a password is to protect the data...

p.s
I can't use "lock screen" because it aventualy freeze my desktop, & the only release is the "reset" button.

[Marc Deslauriers (mdeslaur)]

Did you disable gnome-screensaver in any way, including disabling the lock screen functionality?

[Goldy (sutrdudk)]

I REinstalled the "lock screen" package.
now I choose "system > lock screen" to get the screensaver (real lock), then in order to prevent freezing I click ctrl+alt+f4 to get the command line.

unfortunately choosing "system > logout > switch user" will STILL show my 'protected' desktop to less then a second before demanding a password, & if stay on the screensaver will freez my desktop!

[Launchpad Janitor (janitor)]

[Expired for gnome-screensaver (Ubuntu) because there has been no activity for 60 days.]

[Goldy (sutrdudk)]

Y is this "medium" project is still 'unassigen'?