Question : Second unknown root user

I'm setting up a new server (vps) on a cloud, it's a centos LAMP, with virtualmin as the control panel.

When I logged into ssh today, and ran top, I noticed that top said there were two users.

I did 'who', and get:

root     xvc0         2009-05-01 13:15
root     pts/0        2009-05-04 10:37 (c-86-116-123-16.hsd1.tx.comcast.net)

The comcast one is me.  The other one has been on for several days I see, and doesn't have an address on it.

Could that be the control panel? Or another program, or me logging on a few days ago and the connect not closing right?  What does the 'xvc0' indicate?

Thanks for any guidance on this,  Chris

Answer : Second unknown root user

xvc is Xen virtual console, you shouldn't be worried about it, unless you are not using xen :)