Greetings

I have an Celeron 2500 with 1 gig of ram. Have upto date virus protection and firewall (zone alarm)

I use dial up and my internet connection keeps dropping out whenever there gets to be high traffic through the modem. ie send/reciving onO utlook express while booting up opera or trying to download a file. This is quite regularand can be every 2 minutes.
Event viewer gives a security event occuring of type called "failure audit", catagory "policy change" and desctription as follows

"IPsec Services/ IPsec services failed to get the complete list of network interfaces on this machine. This can be a potential security hazard to the machine since some of the network interfacesmay not get protection as desired by the applied IpSec filters. Please run IPSecmoniter snap-in to further diagnose problem."

Have run ipsec monitor as per MS help and useless.

Aby ideas, have i downloaded a security update from Microsoft that is conflicting with my computer??

Thanks for any help