Window Vista Home Permium 32 bits won't able to sleep with Norton Internet Security 2009

My PC will always awake from the sleep mode (I have 20 minutes in power settings) since two weeks ago with the similar history in the Norton history.

No matter how i adjust the power options, windows will always awake from the sleep mode!

Pleas help!

 

 

Protecting your connection for a newly detected netwrok on adapter "NVIDIA nForce Netwroking Controller" (IP Address:192.168.1.102) 6:42:48 PM

Connected to a shared netwrok. (00 13 10 EA 37 60) 6:42:47 PM

Protecting your connection for a newly detected netwrok on adapter "NVIDIA nForce Netwroking Controller" (IP Address:fe80::f59a:2f9b:8e80:c818) 6:42:47 PM

IP address has disappeared from adapter NVIDIA nForce Networking Controller and is no longer beging protected (IP address: 192.168.1.102) 6:42:25 PM

IP address has disappeared from adapter NVIDIA nForce Networking Controller and is no longer beging protected (IP address: fe80::f59a:2f9b:8e80:c818) 6:42:25 PM

Protecting your connection for a newly detected netwrok on adapter "NVIDIA nForce Netwroking Controller" (IP Address:192.168.1.102) 6:42:09 PM

Connected to a shared netwrok. (00 13 10 EA 37 60) 6:42:08 PM

Protecting your connection for a newly detected netwrok on adapter "NVIDIA nForce Netwroking Controller" (IP Address:fe80::f59a:2f9b:8e80:c818) 6:42:07 PM

IP address has disappeared from adapter NVIDIA nForce Networking Controller and is no longer beging protected (IP address: 192.168.1.102) 6:41:38 PM

IP address has disappeared from adapter NVIDIA nForce Networking Controller and is no longer beging protected (IP address: fe80::f59a:2f9b:8e80:c818) 6:41:38 PM