Here is some more information on how to disable for cisco
http://www.cisco.com/univercd/cc/td/...sec/conike.htm

for windows

IPSEC Policy Agent - Manages IP security policy and starts the
ISAKMP/Oakley (IKE) and the IP security driver. This service is needed for
IP security, e.g. if you want to establish a Virtual Private Network (VPN)
connection to your computer. Otherwise you can turn it off.
from http://www.auldfart.co.uk/howto/win2kserv1.htm