There is a bug in Ubuntu 11.10 running on OpenVZ that causes the CPU to spike to 100% shortly after booting.
To fix this issue without asking for assistance by an administrator, type the following commands as root:
# apt-get install python-software-properties
# add-apt-repository ppa:jammy/upstart.fix-880049
# apt-get update && apt-get upgrade
Once your VPS has been rebooted the bug will go away.
This only affects Ubuntu version 11.10.
If you have any additional problems, or if this doesn’t fix the problem, please open a support ticket.