The system is not shutting down

Hi guys.

The system is not shutting down, is just that screen with the logo NeTrunner.

What can this happening?
I’m using NetRunner 12:12.

What KDE version are you using?
Any gfx drivers installed?

OS: Linux 3.5.0-31-generic x86_64
Current user: xx@xx
System: Netrunner 12.12
KDE: 4.10.3

Have you tried upgrading the kernel?

It did not solve my problem here