Jerry Amundson  wrote on Thu Mar 5 19:27:34 UTC 2009
>Otherwise, if you do not need Xen 3.2, just "yum groupinstall Virtualization".
 
Thanks for your advice,i do "yum groupinstall Virtualization".
Unfortuanately,when reboot,the system also halted at:
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Red Hat nash version 5.1.19.6
usb 1-5: device not accepting address 4 ,error -110
usb 1-5: device not accepting address 5, error -110
usb 1-5: device not accepting address 6,error -110
usb 1-5: device not accepting address 7,error -110
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