I'm having the exact same problem this guy had:
http://community.spiceworks.com/topic/36814-surf-control-user-agent
Decommissioned Surfcontrol server, event logs in this other servers saying "The Surfcontrol service at [old server] is not listening," "DNS lookup for workstation [old workstation] failed," etc.
No Surfcontrol or Websense services running, nothing in startup, no processes, how can I uninstall this?