On one of my linodes (neo101.org) there is a process that suddenly uses 100% cpu. I made a quick google about it and it seems to be Xen related. My other Xen linode does not have that process running.

The linode with the trouble has been running since 2008-apr-03 and so has the khvcd process. I tried to kill -9 the process but it wont die. I havent tried to reboot yet.

The linode that has it running malfunctioned yesterday[1]. Maybe it is related?

[1]
http://www.linode.com/forums/viewtopic.php?t=3229