this happens only when gutsy is installed to the hard drive and i update the system
sudo apt-get update
sudo apt-get upgrade
if i login of normal way the desktop doesn't load, then the login window appears again and when I type Ctrl + Alt + F1 the system is blocked, and only works Ctrl + Alt + Del
graphics card: ati radeon xpress 200m
this happens only when gutsy is installed to the hard drive and i update the system
sudo apt-get update
sudo apt-get upgrade
if i login of normal way the desktop doesn't load, then the login window appears again and when I type Ctrl + Alt + F1 the system is blocked, and only works Ctrl + Alt + Del