Comment 6 for bug 587668

Mine usually gives me unlock which usually succeeds.

BUT.

This time it will not give me unlock option. Mouse is active but no keys seem to do anything for the x-session.

HOWEVER!

CTRL-ALT-F1 does allow me to log into another terminal session. I "top"ped and I see gnome-screensaver. "kill"ed the pid successfully... but it regens as soon as I switch back to the CTRL-ALT-F7 X-session...

Hard killed it with the power button. Works again. This has been intermittent but several occurrences since moving to 10.04.

On a hp 8710p laptop that has otherwise been a dream with other ubuntu, Linux live distros, and ms xp, vista, and 7.