Hi,
            The following questions for rehhat5.5 image, I test ubuntu8 and windows 
            2003 is not such a 
            problem。
            Following the results of direct testing xen.
             
            Creating 
            a virtual machine operating system is redhat5.5 mirror.
            Accessing is normal by VNCviewer and the mouse can slide phenomenon.
            Using the xm save command the existing state of the virtual 
            machine is stored into a file, the file name 
            is checkpoint name.
            execute "xm save one-11 
            /one_images_2.2/11/images/checkpoint" ,the below:
            
            
            [root@vm-container-48-14 images]# ll
            -rwxr-xr-x 1 root     root       284571728 Jun 23 11:21 checkpoint
execute 
            xm list command,thebelow:
 
            
            xm 
            store /one_images_2.2/11/images/checkpoint  is performed,the 
            below:
            
            But 
            through VNCviewer access, the mouse can not slide 
            phenomenon.Feel like crashing the same
            What you do 
            with redhat mirror you have such a 
            problem ?
            Then run 
            this command "xm save one-11 
            /one_images_2.2/11/images/checkpoint" ,the 
            below:
            
            The 
            VM domain Name has been this name --- migrating-one-11, not respond. 
            [root@vm-container-48-14 images]# ll
            -rwxr-xr-x 1 root     root             991 Jun 23 12:02 checkpoint
 
            the 
            checkpoint file size that there has been no change。
             
            Look 
            forward to your apply!!
             
            Regards 
            
            david