Shut down does´t work Ubuntu 11.10

[Henny de Graaf]

Hello,

My Ubuntu 11.10 doesn´t shut down, the screen comes back with the log in screen.
I searched with the internet and mayby there´s a problem with ACPI?
This is a bug or not?
Please help, because it´s important to shut down normaly.

Kind regards,

Dennis and Harm
 		 	   		  
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