Menu and task bar doesn't appear in Gnome

[Túlio Henrique Alves dos Santos]

Hello everyone!

I just installed Ubuntu Hardy Heron in two computers, one at my work, and
another in my friend's house. Both work perfectly. After about one day using
the system, When I do the login, just the icons and wallpaper are displayed,
nothing more. The task bar and menu bar just don't appear. I re-installed
the system three times, and the problem don't go!
Somebody have any idea how to fix it?

thanks a lot

Túlio Henrique
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/ubuntu-users/attachments/20080430/9d9209b4/attachment.html>