Here you can see the default login screen for Ubuntu 8.10. You simply add username and password and you have access to the Desktop. Simple, however, as you will see there are many options that can go with this login process. If you will go to System/Administration and select Login Window you will find that you have a lot of options available for login.

Ubuntu Tweak 0.5.4 was released today. It doesn't come with new major features except an option to customize the GDM (login screen), which you can use to change the login screen background, logo, disable the user list, disable the login sound and disable showing the restart buttons:

Back last month I covered a quick KDE tip on how to set the Num Lock key on when you log in to KDE. While that generally works, it doesn’t cover the KDE login screen (or KDM).

Customize easily your Ubuntu Login screen with different cool themes. [Watch the quick tutorial]

KDM (KDE Display Manager) is the default graphical login interface of the K Desktop Environment. Anyone who uses KDE should know that KDM is highly customizable and can be easily configured.If you are already bored with your simple KDE login screen, you can spice it up a little through theming.

Browsing the Gnome Shell wiki @ live.gnome.org, I stumbled upon some great login screen and lock screen mockups which you can view below:

What's new in Ubuntu 9.10 Alpha 6? Well... first of all, there is no more Usplash (the boot splash screen). So it appears the the team has successfully managed to fulfill their initial plans for making a faster startup where a boot screen is no longer necessary.

By default, Ubuntu requires that you login each time you run the operating system. If you are the only person using the computer and aren’t worried about security you can enable automatic login.

One of the new features in Ubuntu 9.10 is it show the currently available users list at login screen if you want to hide this just follow one of the following method