Just installed SP3, FP4d, and TCPIP 610ha.

The server now hiccups seemingly at random for about 4 seconds or less at a time - does not happen frequently, maybe once every hour or two hours. With web browsing its not apparent, but in ICQ a disconnection notice appears and messages are lost, if a PCAnywhere session is open the user will get booted, etc.

Any ideas on where to begin troubleshooting this?

Thank you.