I can confirm this bug on my HP notebook 11.04 w/ Unity and ATI video. If I do a sudo halt from the terminal it shuts down properly. However, reboot from the menu or terminal still do not work. Shutting down from the menu or either reboot will hang on the Ubuntu splash screen with the dots. A couple of the dots animate and then nothing - hung.
I can confirm this bug on my HP notebook 11.04 w/ Unity and ATI video. If I do a sudo halt from the terminal it shuts down properly. However, reboot from the menu or terminal still do not work. Shutting down from the menu or either reboot will hang on the Ubuntu splash screen with the dots. A couple of the dots animate and then nothing - hung.